86979433961 has 12 divisors (see below), whose sum is σ = 101361841668. Its totient is φ = 74419928352.

The previous prime is 86979433939. The next prime is 86979434023. The reversal of 86979433961 is 16933497968.

It can be written as a sum of positive squares in 2 ways, for example, as 43806490000 + 43172943961 = 209300^2 + 207781^2 .

It is not a de Polignac number, because 86979433961 - 2³⁴ = 69799564777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86979433901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1566146 + ... + 1620731.

It is an arithmetic number, because the mean of its divisors is an integer number (8446820139).

Almost surely, 2^86979433961 is an apocalyptic number.

It is an amenable number.

86979433961 is a deficient number, since it is larger than the sum of its proper divisors (14382407707).

86979433961 is a wasteful number, since it uses less digits than its factorization.

86979433961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187448 (or 3187441 counting only the distinct ones).

The product of its digits is 52907904, while the sum is 65.

The spelling of 86979433961 in words is "eighty-six billion, nine hundred seventy-nine million, four hundred thirty-three thousand, nine hundred sixty-one".