78612528104 has 64 divisors (see below), whose sum is σ = 164981931840. Its totient is φ = 34807772160.

The previous prime is 78612528097. The next prime is 78612528143. The reversal of 78612528104 is 40182521687.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1383584 + ... + 1439280.

It is an arithmetic number, because the mean of its divisors is an integer number (2577842685).

Almost surely, 2^78612528104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78612528104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82490965920).

78612528104 is an abundant number, since it is smaller than the sum of its proper divisors (86369403736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78612528104 is a wasteful number, since it uses less digits than its factorization.

78612528104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56130 (or 56126 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 78612528104 in words is "seventy-eight billion, six hundred twelve million, five hundred twenty-eight thousand, one hundred four".