870891087052 has 12 divisors (see below), whose sum is σ = 1741782174160. Its totient is φ = 373239037296.

The previous prime is 870891087047. The next prime is 870891087067. The reversal of 870891087052 is 250780198078.

870891087052 is an admirable number.

It is a super-2 number, since 2×870891087052² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 870891086984 and 870891087002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15551626527 + ... + 15551626582.

Almost surely, 2^870891087052 is an apocalyptic number.

It is an amenable number.

870891087052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

870891087052 is a wasteful number, since it uses less digits than its factorization.

870891087052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31103253120 (or 31103253118 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 55.

The spelling of 870891087052 in words is "eight hundred seventy billion, eight hundred ninety-one million, eighty-seven thousand, fifty-two".