870640867631751 has 4 divisors (see below), whose sum is σ = 1160854490175672. Its totient is φ = 580427245087832.

The previous prime is 870640867631719. The next prime is 870640867631783. The reversal of 870640867631751 is 157136768046078.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (870640867631719) and next prime (870640867631783).

It is a cyclic number.

It is not a de Polignac number, because 870640867631751 - 2⁵ = 870640867631719 is a prime.

It is a super-2 number, since 2×870640867631751² (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 (870640867631701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145106811271956 + ... + 145106811271961.

It is an arithmetic number, because the mean of its divisors is an integer number (290213622543918).

Almost surely, 2^{870640867631751} is an apocalyptic number.

870640867631751 is a deficient number, since it is larger than the sum of its proper divisors (290213622543921).

870640867631751 is a wasteful number, since it uses less digits than its factorization.

870640867631751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290213622543920.

The product of its (nonzero) digits is 284497920, while the sum is 69.

The spelling of 870640867631751 in words is "eight hundred seventy trillion, six hundred forty billion, eight hundred sixty-seven million, six hundred thirty-one thousand, seven hundred fifty-one".