86556931722 has 16 divisors (see below), whose sum is σ = 192348737280. Its totient is φ = 28852310556.

The previous prime is 86556931693. The next prime is 86556931729. The reversal of 86556931722 is 22713965568.

86556931722 is a `hidden beast` number, since 8 + 6 + 5 + 569 + 3 + 1 + 72 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1602906143 = 86556931722 / (8 + 6 + 5 + 5 + 6 + 9 + 3 + 1 + 7 + 2 + 2).

It is not an unprimeable number, because it can be changed into a prime (86556931729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801453018 + ... + 801453125.

It is an arithmetic number, because the mean of its divisors is an integer number (12021796080).

Almost surely, 2^86556931722 is an apocalyptic number.

86556931722 is an abundant number, since it is smaller than the sum of its proper divisors (105791805558).

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

86556931722 is a wasteful number, since it uses less digits than its factorization.

86556931722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602906154 (or 1602906148 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 86556931722 in words is "eighty-six billion, five hundred fifty-six million, nine hundred thirty-one thousand, seven hundred twenty-two".