38678401658655 has 48 divisors (see below), whose sum is σ = 75580935504480. Its totient is φ = 18753164432640.

The previous prime is 38678401658597. The next prime is 38678401658657. The reversal of 38678401658655 is 55685610487683.

38678401658655 is a `hidden beast` number, since 3 + 86 + 7 + 8 + 401 + 65 + 86 + 5 + 5 = 666.

It is not a de Polignac number, because 38678401658655 - 2²⁴ = 38678384881439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38678401658657) 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, 1183895562 + ... + 1183928231.

It is an arithmetic number, because the mean of its divisors is an integer number (1574602823010).

Almost surely, 2^{38678401658655} is an apocalyptic number.

38678401658655 is a deficient number, since it is larger than the sum of its proper divisors (36902533845825).

38678401658655 is a wasteful number, since it uses less digits than its factorization.

38678401658655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367823829 (or 2367823812 counting only the distinct ones).

The product of its (nonzero) digits is 1161216000, while the sum is 72.

The spelling of 38678401658655 in words is "thirty-eight trillion, six hundred seventy-eight billion, four hundred one million, six hundred fifty-eight thousand, six hundred fifty-five".