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12611632020 = 22351371227729
BaseRepresentation
bin10111011111011011…
…00011101110010100
31012112221000021202020
423233231203232110
5201312034211040
65443235013140
7624346050321
oct135755435624
935487007666
1012611632020
115391a34889
12253b73a1b0
13125caa3a70
14878d51b48
154dc2d9cd0
hex2efb63b94

12611632020 has 96 divisors (see below), whose sum is σ = 38564709120. Its totient is φ = 3060664320.

The previous prime is 12611632001. The next prime is 12611632031. The reversal of 12611632020 is 2023611621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58485 + ... + 169244.

It is an arithmetic number, because the mean of its divisors is an integer number (401715720).

Almost surely, 212611632020 is an apocalyptic number.

12611632020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12611632020 is an abundant number, since it is smaller than the sum of its proper divisors (25953077100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12611632020 is a wasteful number, since it uses less digits than its factorization.

12611632020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227825 (or 227823 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 12611632020 in words is "twelve billion, six hundred eleven million, six hundred thirty-two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 71 78 130 142 156 195 213 260 284 355 390 426 710 780 852 923 1065 1420 1846 2130 2769 3692 4260 4615 5538 9230 11076 13845 18460 27690 55380 227729 455458 683187 910916 1138645 1366374 2277290 2732748 2960477 3415935 4554580 5920954 6831870 8881431 11841908 13663740 14802385 16168759 17762862 29604770 32337518 35525724 44407155 48506277 59209540 64675036 80843795 88814310 97012554 161687590 177628620 194025108 210193867 242531385 323375180 420387734 485062770 630581601 840775468 970125540 1050969335 1261163202 2101938670 2522326404 3152908005 4203877340 6305816010 12611632020