86478651523 has 16 divisors (see below), whose sum is σ = 98697553920. Its totient is φ = 75067547200.

The previous prime is 86478651499. The next prime is 86478651527. The reversal of 86478651523 is 32515687468.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 86478651523 - 2⁵ = 86478651491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86478651527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2018683 + ... + 2061076.

It is an arithmetic number, because the mean of its divisors is an integer number (6168597120).

Almost surely, 2^86478651523 is an apocalyptic number.

86478651523 is a deficient number, since it is larger than the sum of its proper divisors (12218902397).

86478651523 is a wasteful number, since it uses less digits than its factorization.

86478651523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079858.

The product of its digits is 9676800, while the sum is 55.

The spelling of 86478651523 in words is "eighty-six billion, four hundred seventy-eight million, six hundred fifty-one thousand, five hundred twenty-three".