381568081872 has 20 divisors (see below), whose sum is σ = 985717544960. Its totient is φ = 127189360608.

The previous prime is 381568081871. The next prime is 381568081883. The reversal of 381568081872 is 278180865183.

It is a super-2 number, since 2×381568081872² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381568081871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3974667472 + ... + 3974667567.

It is an arithmetic number, because the mean of its divisors is an integer number (49285877248).

Almost surely, 2^381568081872 is an apocalyptic number.

It is an amenable number.

381568081872 is an abundant number, since it is smaller than the sum of its proper divisors (604149463088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381568081872 is a wasteful number, since it uses less digits than its factorization.

381568081872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7949335050 (or 7949335044 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 57.

The spelling of 381568081872 in words is "three hundred eighty-one billion, five hundred sixty-eight million, eighty-one thousand, eight hundred seventy-two".