38121034318857 has 48 divisors (see below), whose sum is σ = 64129155487488. Its totient is φ = 21368494293120.

The previous prime is 38121034318853. The next prime is 38121034318897. The reversal of 38121034318857 is 75881343012183.

38121034318857 is a `hidden beast` number, since 3 + 8 + 1 + 210 + 34 + 318 + 85 + 7 = 666.

It is not a de Polignac number, because 38121034318857 - 2² = 38121034318853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38121034318853) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17083023 + ... + 19185195.

It is an arithmetic number, because the mean of its divisors is an integer number (1336024072656).

Almost surely, 2^{38121034318857} is an apocalyptic number.

It is an amenable number.

38121034318857 is a deficient number, since it is larger than the sum of its proper divisors (26008121168631).

38121034318857 is a wasteful number, since it uses less digits than its factorization.

38121034318857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107670 (or 2107667 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 38121034318857 in words is "thirty-eight trillion, one hundred twenty-one billion, thirty-four million, three hundred eighteen thousand, eight hundred fifty-seven".