38662531931641 has 2 divisors, whose sum is σ = 38662531931642. Its totient is φ = 38662531931640.

The previous prime is 38662531931593. The next prime is 38662531931651. The reversal of 38662531931641 is 14613913526683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38633434736400 + 29097195241 = 6215580^2 + 170579^2 .

It is a cyclic number.

It is not a de Polignac number, because 38662531931641 - 2⁴⁵ = 3478159842809 is a prime.

It is not a weakly prime, because it can be changed into another prime (38662531931651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19331265965820 + 19331265965821.

It is an arithmetic number, because the mean of its divisors is an integer number (19331265965821).

Almost surely, 2^{38662531931641} is an apocalyptic number.

It is an amenable number.

38662531931641 is a deficient number, since it is larger than the sum of its proper divisors (1).

38662531931641 is an equidigital number, since it uses as much as digits as its factorization.

38662531931641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16796160, while the sum is 58.

The spelling of 38662531931641 in words is "thirty-eight trillion, six hundred sixty-two billion, five hundred thirty-one million, nine hundred thirty-one thousand, six hundred forty-one".