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20693756950 = 2521566726417
BaseRepresentation
bin10011010001011100…
…011010110000010110
31222102011221202212121
4103101130122300112
5314340100210300
613301231010154
71331545013626
oct232134326026
958364852777
1020693756950
11885a0a4979
12401636995a
131c4a33c4c9
1410044b6886
15811b0881a
hex4d171ac16

20693756950 has 24 divisors (see below), whose sum is σ = 38494301832. Its totient is φ = 8276661120.

The previous prime is 20693756921. The next prime is 20693757013. The reversal of 20693756950 is 5965739602.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 770142 + ... + 796558.

It is an arithmetic number, because the mean of its divisors is an integer number (1603929243).

Almost surely, 220693756950 is an apocalyptic number.

20693756950 is a deficient number, since it is larger than the sum of its proper divisors (17800544882).

20693756950 is a wasteful number, since it uses less digits than its factorization.

20693756950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42096 (or 42091 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 52.

The spelling of 20693756950 in words is "twenty billion, six hundred ninety-three million, seven hundred fifty-six thousand, nine hundred fifty".

Divisors: 1 2 5 10 25 50 15667 26417 31334 52834 78335 132085 156670 264170 391675 660425 783350 1320850 413875139 827750278 2069375695 4138751390 10346878475 20693756950