86447278015 has 32 divisors (see below), whose sum is σ = 123831152640. Its totient is φ = 56645702784.

The previous prime is 86447277971. The next prime is 86447278019. The reversal of 86447278015 is 51087274468.

It is a cyclic number.

It is not a de Polignac number, because 86447278015 - 2⁷ = 86447277887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86447278019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 784717 + ... + 888073.

It is an arithmetic number, because the mean of its divisors is an integer number (3869723520).

Almost surely, 2^86447278015 is an apocalyptic number.

86447278015 is a deficient number, since it is larger than the sum of its proper divisors (37383874625).

86447278015 is a wasteful number, since it uses less digits than its factorization.

86447278015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104431.

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 86447278015 in words is "eighty-six billion, four hundred forty-seven million, two hundred seventy-eight thousand, fifteen".