870643322842881 has 32 divisors (see below), whose sum is σ = 1335741574348800. Its totient is φ = 494118564997824.

The previous prime is 870643322842829. The next prime is 870643322842889. The reversal of 870643322842881 is 188248223346078.

It is a happy number.

It is not a de Polignac number, because 870643322842881 - 2²³ = 870643314454273 is a prime.

It is a super-2 number, since 2×870643322842881² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (870643322842889) 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 31 ways as a sum of consecutive naturals, for example, 14343436 + ... + 44125058.

It is an arithmetic number, because the mean of its divisors is an integer number (41741924198400).

Almost surely, 2^{870643322842881} is an apocalyptic number.

It is an amenable number.

870643322842881 is a deficient number, since it is larger than the sum of its proper divisors (465098251505919).

870643322842881 is a wasteful number, since it uses less digits than its factorization.

870643322842881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29791125.

The product of its (nonzero) digits is 198180864, while the sum is 66.

The spelling of 870643322842881 in words is "eight hundred seventy trillion, six hundred forty-three billion, three hundred twenty-two million, eight hundred forty-two thousand, eight hundred eighty-one".