388996711172 has 12 divisors (see below), whose sum is σ = 681672959436. Its totient is φ = 194233008480.

The previous prime is 388996711171. The next prime is 388996711241. The reversal of 388996711172 is 271117699883.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 384132206656 + 4864504516 = 619784^2 + 69746^2 .

It is a super-2 number, since 2×388996711172² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388996711171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66333479 + ... + 66339342.

It is an arithmetic number, because the mean of its divisors is an integer number (56806079953).

Almost surely, 2^388996711172 is an apocalyptic number.

It is an amenable number.

388996711172 is a deficient number, since it is larger than the sum of its proper divisors (292676248264).

388996711172 is a wasteful number, since it uses less digits than its factorization.

388996711172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132673558 (or 132673556 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 62.

The spelling of 388996711172 in words is "three hundred eighty-eight billion, nine hundred ninety-six million, seven hundred eleven thousand, one hundred seventy-two".