388042975107 has 16 divisors (see below), whose sum is σ = 575393189280. Its totient is φ = 258463698336.

The previous prime is 388042975097. The next prime is 388042975141. The reversal of 388042975107 is 701579240883.

It is a happy number.

388042975107 is a `hidden beast` number, since 3 + 8 + 80 + 42 + 9 + 7 + 510 + 7 = 666.

It is not a de Polignac number, because 388042975107 - 2¹² = 388042971011 is a prime.

It is a super-2 number, since 2×388042975107² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388042973107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6403128 + ... + 6463445.

It is an arithmetic number, because the mean of its divisors is an integer number (35962074330).

Almost surely, 2^388042975107 is an apocalyptic number.

388042975107 is a deficient number, since it is larger than the sum of its proper divisors (187350214173).

388042975107 is a wasteful number, since it uses less digits than its factorization.

388042975107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12867699 (or 12867693 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 388042975107 in words is "three hundred eighty-eight billion, forty-two million, nine hundred seventy-five thousand, one hundred seven".