78794394048 has 84 divisors (see below), whose sum is σ = 226586079720. Its totient is φ = 26179186176.

The previous prime is 78794393999. The next prime is 78794394079. The reversal of 78794394048 is 84049349787.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45963 + ... + 399626.

It is an arithmetic number, because the mean of its divisors is an integer number (2697453330).

Almost surely, 2^78794394048 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 78794394048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113293039860).

78794394048 is an abundant number, since it is smaller than the sum of its proper divisors (147791685672).

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

78794394048 is a wasteful number, since it uses less digits than its factorization.

78794394048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445914 (or 445901 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 78794394048 in words is "seventy-eight billion, seven hundred ninety-four million, three hundred ninety-four thousand, forty-eight".