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38845023664 = 2417257555691
BaseRepresentation
bin100100001011010110…
…000000010110110000
310201021011202122211011
4210023112000112300
51114023311224124
625502315400304
72543421152566
oct441326002660
9121234678734
1038845023664
1115524004247
127641153094
1338809c3405
141c4703ba36
1510253e1994
hex90b5805b0

38845023664 has 40 divisors (see below), whose sum is σ = 79999643088. Its totient is φ = 18208849920.

The previous prime is 38845023661. The next prime is 38845023671. The reversal of 38845023664 is 46632054883.

It is not an unprimeable number, because it can be changed into a prime (38845023661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207942 + ... + 347749.

Almost surely, 238845023664 is an apocalyptic number.

38845023664 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

38845023664 is an abundant number, since it is smaller than the sum of its proper divisors (41154619424).

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

38845023664 is a wasteful number, since it uses less digits than its factorization.

38845023664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555973 (or 555967 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 38845023664 in words is "thirty-eight billion, eight hundred forty-five million, twenty-three thousand, six hundred sixty-four".

Divisors: 1 2 4 8 16 17 34 68 136 257 272 514 1028 2056 4112 4369 8738 17476 34952 69904 555691 1111382 2222764 4445528 8891056 9446747 18893494 37786988 75573976 142812587 151147952 285625174 571250348 1142500696 2285001392 2427813979 4855627958 9711255916 19422511832 38845023664