78651273984 has 288 divisors, whose sum is σ = 237882355200. Its totient is φ = 22935306240.

The previous prime is 78651273971. The next prime is 78651273997. The reversal of 78651273984 is 48937215687.

It is an interprime number because it is at equal distance from previous prime (78651273971) and next prime (78651273997).

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, 9728824 + ... + 9736904.

It is an arithmetic number, because the mean of its divisors is an integer number (825980400).

Almost surely, 2^78651273984 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 78651273984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118941177600).

78651273984 is an abundant number, since it is smaller than the sum of its proper divisors (159231081216).

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

78651273984 is a wasteful number, since it uses less digits than its factorization.

78651273984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8171 (or 8157 counting only the distinct ones).

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

The spelling of 78651273984 in words is "seventy-eight billion, six hundred fifty-one million, two hundred seventy-three thousand, nine hundred eighty-four".