86321201972 has 24 divisors (see below), whose sum is σ = 153947142216. Its totient is φ = 42336672768.

The previous prime is 86321201957. The next prime is 86321202007. The reversal of 86321201972 is 27910212368.

It can be written as a sum of positive squares in 4 ways, for example, as 16711767076 + 69609434896 = 129274^2 + 263836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943568 + ... + 1031000.

It is an arithmetic number, because the mean of its divisors is an integer number (6414464259).

Almost surely, 2^86321201972 is an apocalyptic number.

It is an amenable number.

86321201972 is a deficient number, since it is larger than the sum of its proper divisors (67625940244).

86321201972 is a wasteful number, since it uses less digits than its factorization.

86321201972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92147 (or 92145 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 86321201972 in words is "eighty-six billion, three hundred twenty-one million, two hundred one thousand, nine hundred seventy-two".