870643725617131 has 16 divisors (see below), whose sum is σ = 929146891140000. Its totient is φ = 813456189824256.

The previous prime is 870643725617101. The next prime is 870643725617177. The reversal of 870643725617131 is 131716527346078.

It is a cyclic number.

It is not a de Polignac number, because 870643725617131 - 2³³ = 870635135682539 is a prime.

It is a super-2 number, since 2×870643725617131² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 870643725617131.

It is not an unprimeable number, because it can be changed into a prime (870643725617101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661127736 + ... + 662443333.

It is an arithmetic number, because the mean of its divisors is an integer number (58071680696250).

Almost surely, 2^{870643725617131} is an apocalyptic number.

870643725617131 is a deficient number, since it is larger than the sum of its proper divisors (58503165522869).

870643725617131 is a wasteful number, since it uses less digits than its factorization.

870643725617131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323571566.

The product of its (nonzero) digits is 35562240, while the sum is 61.

The spelling of 870643725617131 in words is "eight hundred seventy trillion, six hundred forty-three billion, seven hundred twenty-five million, six hundred seventeen thousand, one hundred thirty-one".