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664581416316 = 223659648112967
BaseRepresentation
bin10011010101111000010…
…00111010010101111100
32100112101211011220221020
421222330020322111330
541342030320310231
61225145434104140
766004642555416
oct11527410722574
92315354156836
10664581416316
1123693597a534
12a8972b7b050
134a8925c910c
14242473979b6
15124498e2396
hex9abc23a57c

664581416316 has 48 divisors (see below), whose sum is σ = 1553402484480. Its totient is φ = 221139797760.

The previous prime is 664581416309. The next prime is 664581416333. The reversal of 664581416316 is 613614185466.

It is a super-2 number, since 2×6645814163162 (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51245265 + ... + 51258231.

It is an arithmetic number, because the mean of its divisors is an integer number (32362551760).

Almost surely, 2664581416316 is an apocalyptic number.

It is an amenable number.

664581416316 is an abundant number, since it is smaller than the sum of its proper divisors (888821068164).

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

664581416316 is a wasteful number, since it uses less digits than its factorization.

664581416316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20114 (or 20112 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The spelling of 664581416316 in words is "six hundred sixty-four billion, five hundred eighty-one million, four hundred sixteen thousand, three hundred sixteen".

Divisors: 1 2 3 4 6 12 659 1318 1977 2636 3954 6481 7908 12962 12967 19443 25924 25934 38886 38901 51868 77772 77802 155604 4270979 8541958 8545253 12812937 17083916 17090506 25625874 25635759 34181012 51251748 51271518 84039127 102543036 168078254 252117381 336156508 504234762 1008469524 55381784693 110763569386 166145354079 221527138772 332290708158 664581416316