78533427115 has 48 divisors (see below), whose sum is σ = 111474177696. Its totient is φ = 52650624000.

The previous prime is 78533427059. The next prime is 78533427139. The reversal of 78533427115 is 51172433587.

It is not a de Polignac number, because 78533427115 - 2²¹ = 78531329963 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7402815 + ... + 7413415.

It is an arithmetic number, because the mean of its divisors is an integer number (2322378702).

Almost surely, 2^78533427115 is an apocalyptic number.

78533427115 is a deficient number, since it is larger than the sum of its proper divisors (32940750581).

78533427115 is a wasteful number, since it uses less digits than its factorization.

78533427115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11440 (or 11427 counting only the distinct ones).

The product of its digits is 705600, while the sum is 46.

The spelling of 78533427115 in words is "seventy-eight billion, five hundred thirty-three million, four hundred twenty-seven thousand, one hundred fifteen".