381175666864 has 40 divisors (see below), whose sum is σ = 750912822432. Its totient is φ = 187394027520.

The previous prime is 381175666831. The next prime is 381175666889. The reversal of 381175666864 is 468666571183.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2615997 + ... + 2757859.

Almost surely, 2^381175666864 is an apocalyptic number.

It is an amenable number.

381175666864 is a deficient number, since it is larger than the sum of its proper divisors (369737155568).

381175666864 is a wasteful number, since it uses less digits than its factorization.

381175666864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144685 (or 144679 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 61.

The spelling of 381175666864 in words is "three hundred eighty-one billion, one hundred seventy-five million, six hundred sixty-six thousand, eight hundred sixty-four".