86861925870 has 32 divisors (see below), whose sum is σ = 208516073472. Its totient is φ = 23157907872.

The previous prime is 86861925863. The next prime is 86861925877. The reversal of 86861925870 is 7852916868.

It is an interprime number because it is at equal distance from previous prime (86861925863) and next prime (86861925877).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86861925877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194622 + ... + 460001.

It is an arithmetic number, because the mean of its divisors is an integer number (6516127296).

Almost surely, 2^86861925870 is an apocalyptic number.

86861925870 is an abundant number, since it is smaller than the sum of its proper divisors (121654147602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86861925870 is a wasteful number, since it uses less digits than its factorization.

86861925870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659056.

The product of its (nonzero) digits is 11612160, while the sum is 60.

The spelling of 86861925870 in words is "eighty-six billion, eight hundred sixty-one million, nine hundred twenty-five thousand, eight hundred seventy".