870641434140644 has 48 divisors (see below), whose sum is σ = 1594428565632000. Its totient is φ = 415477958238720.

The previous prime is 870641434140623. The next prime is 870641434140721. The reversal of 870641434140644 is 446041434146078.

It is a self number, because there is not a number n which added to its sum of digits gives 870641434140644.

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, 125606897 + ... + 132356999.

It is an arithmetic number, because the mean of its divisors is an integer number (33217261784000).

Almost surely, 2^{870641434140644} is an apocalyptic number.

It is an amenable number.

870641434140644 is a deficient number, since it is larger than the sum of its proper divisors (723787131491356).

870641434140644 is a wasteful number, since it uses less digits than its factorization.

870641434140644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6764460 (or 6764458 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 56.

The spelling of 870641434140644 in words is "eight hundred seventy trillion, six hundred forty-one billion, four hundred thirty-four million, one hundred forty thousand, six hundred forty-four".