78801012464 has 80 divisors (see below), whose sum is σ = 159229213440. Its totient is φ = 37737584640.

The previous prime is 78801012443. The next prime is 78801012473. The reversal of 78801012464 is 46421010887.

It is a congruent number.

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, 25344542 + ... + 25347650.

It is an arithmetic number, because the mean of its divisors is an integer number (1990365168).

Almost surely, 2^78801012464 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 78801012464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79614606720).

78801012464 is an abundant number, since it is smaller than the sum of its proper divisors (80428200976).

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

78801012464 is a wasteful number, since it uses less digits than its factorization.

78801012464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658 (or 3652 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The spelling of 78801012464 in words is "seventy-eight billion, eight hundred one million, twelve thousand, four hundred sixty-four".