78791632584 has 128 divisors (see below), whose sum is σ = 230646528000. Its totient is φ = 21965690880.

The previous prime is 78791632559. The next prime is 78791632613. The reversal of 78791632584 is 48523619787.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1122967 + ... + 1191065.

It is an arithmetic number, because the mean of its divisors is an integer number (1801926000).

Almost surely, 2^78791632584 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 78791632584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115323264000).

78791632584 is an abundant number, since it is smaller than the sum of its proper divisors (151854895416).

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

78791632584 is a wasteful number, since it uses less digits than its factorization.

78791632584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68283 (or 68279 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 60.

The spelling of 78791632584 in words is "seventy-eight billion, seven hundred ninety-one million, six hundred thirty-two thousand, five hundred eighty-four".