870672310132581 has 32 divisors (see below), whose sum is σ = 1489920530716800. Its totient is φ = 496640176899840.

The previous prime is 870672310132577. The next prime is 870672310132631. The reversal of 870672310132581 is 185231013276078.

870672310132581 is a `hidden beast` number, since 8 + 7 + 0 + 6 + 7 + 23 + 1 + 0 + 1 + 32 + 581 = 666.

It is not a de Polignac number, because 870672310132581 - 2² = 870672310132577 is a prime.

It is a super-2 number, since 2×870672310132581² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870672310132511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86222247886 + ... + 86222257983.

It is an arithmetic number, because the mean of its divisors is an integer number (46560016584900).

Almost surely, 2^{870672310132581} is an apocalyptic number.

It is an amenable number.

870672310132581 is a deficient number, since it is larger than the sum of its proper divisors (619248220584219).

870672310132581 is a wasteful number, since it uses less digits than its factorization.

870672310132581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172444505906 (or 172444505900 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 870672310132581 in words is "eight hundred seventy trillion, six hundred seventy-two billion, three hundred ten million, one hundred thirty-two thousand, five hundred eighty-one".