38697952355681 has 8 divisors (see below), whose sum is σ = 39328394529984. Its totient is φ = 38069064910800.

The previous prime is 38697952355611. The next prime is 38697952355753. The reversal of 38697952355681 is 18655325979683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38697952355681 - 2³⁴ = 38680772486497 is a prime.

It is a super-2 number, since 2×38697952355681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38697952355611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388632170 + ... + 388731731.

It is an arithmetic number, because the mean of its divisors is an integer number (4916049316248).

Almost surely, 2^{38697952355681} is an apocalyptic number.

It is an amenable number.

38697952355681 is a deficient number, since it is larger than the sum of its proper divisors (630442174303).

38697952355681 is an equidigital number, since it uses as much as digits as its factorization.

38697952355681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777364711.

The product of its digits is 2939328000, while the sum is 77.

The spelling of 38697952355681 in words is "thirty-eight trillion, six hundred ninety-seven billion, nine hundred fifty-two million, three hundred fifty-five thousand, six hundred eighty-one".