891056591382 has 32 divisors (see below), whose sum is σ = 1844241890400. Its totient is φ = 286671596288.

The previous prime is 891056591377. The next prime is 891056591471. The reversal of 891056591382 is 283195650198.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463413 + ... + 1413104.

It is an arithmetic number, because the mean of its divisors is an integer number (57632559075).

Almost surely, 2^891056591382 is an apocalyptic number.

891056591382 is an abundant number, since it is smaller than the sum of its proper divisors (953185299018).

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

891056591382 is a wasteful number, since it uses less digits than its factorization.

891056591382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879280.

The product of its (nonzero) digits is 4665600, while the sum is 57.

The spelling of 891056591382 in words is "eight hundred ninety-one billion, fifty-six million, five hundred ninety-one thousand, three hundred eighty-two".