86056898978 has 6 divisors (see below), whose sum is σ = 129085970769. Its totient is φ = 43028242056.

The previous prime is 86056898899. The next prime is 86056898981. The reversal of 86056898978 is 87989865068.

It can be written as a sum of positive squares in 2 ways, for example, as 85437536209 + 619362769 = 292297^2 + 24887^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=207433.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 311150 + ... + 518582.

Almost surely, 2^86056898978 is an apocalyptic number.

86056898978 is a deficient number, since it is larger than the sum of its proper divisors (43029071791).

86056898978 is an frugal number, since it uses more digits than its factorization.

86056898978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414868 (or 207435 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 74.

The spelling of 86056898978 in words is "eighty-six billion, fifty-six million, eight hundred ninety-eight thousand, nine hundred seventy-eight".