38057956681 has 2 divisors, whose sum is σ = 38057956682. Its totient is φ = 38057956680.

The previous prime is 38057956679. The next prime is 38057956691. The reversal of 38057956681 is 18665975083.

38057956681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30227299600 + 7830657081 = 173860^2 + 88491^2 .

It is a cyclic number.

It is not a de Polignac number, because 38057956681 - 2¹ = 38057956679 is a prime.

It is a super-2 number, since 2×38057956681² (a number of 22 digits) contains 22 as substring.

Together with 38057956679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38057956691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19028978340 + 19028978341.

It is an arithmetic number, because the mean of its divisors is an integer number (19028978341).

Almost surely, 2^38057956681 is an apocalyptic number.

It is an amenable number.

38057956681 is a deficient number, since it is larger than the sum of its proper divisors (1).

38057956681 is an equidigital number, since it uses as much as digits as its factorization.

38057956681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 38057956681 in words is "thirty-eight billion, fifty-seven million, nine hundred fifty-six thousand, six hundred eighty-one".