870561951051 has 16 divisors (see below), whose sum is σ = 1250073294624. Its totient is φ = 535715165184.

The previous prime is 870561951037. The next prime is 870561951109. The reversal of 870561951051 is 150159165078.

It is not a de Polignac number, because 870561951051 - 2⁵ = 870561951019 is a prime.

It is a super-2 number, since 2×870561951051² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (870561951251) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1154395 + ... + 1753211.

It is an arithmetic number, because the mean of its divisors is an integer number (78129580914).

Almost surely, 2^870561951051 is an apocalyptic number.

870561951051 is a deficient number, since it is larger than the sum of its proper divisors (379511343573).

870561951051 is a wasteful number, since it uses less digits than its factorization.

870561951051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636110.

The product of its (nonzero) digits is 378000, while the sum is 48.

The spelling of 870561951051 in words is "eight hundred seventy billion, five hundred sixty-one million, nine hundred fifty-one thousand, fifty-one".