38172411664 has 20 divisors (see below), whose sum is σ = 74016111004. Its totient is φ = 19071479808.

The previous prime is 38172411661. The next prime is 38172411703. The reversal of 38172411664 is 46611427183.

It can be written as a sum of positive squares in 2 ways, for example, as 25223792400 + 12948619264 = 158820^2 + 113792^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38172411664.

It is not an unprimeable number, because it can be changed into a prime (38172411661) 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 3 ways as a sum of consecutive naturals, for example, 898977 + ... + 940480.

Almost surely, 2^38172411664 is an apocalyptic number.

It is an amenable number.

38172411664 is a deficient number, since it is larger than the sum of its proper divisors (35843699340).

38172411664 is a wasteful number, since it uses less digits than its factorization.

38172411664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840762 (or 1840756 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The spelling of 38172411664 in words is "thirty-eight billion, one hundred seventy-two million, four hundred eleven thousand, six hundred sixty-four".