78794926506 has 48 divisors (see below), whose sum is σ = 175954521600. Its totient is φ = 25470280224.

The previous prime is 78794926501. The next prime is 78794926523. The reversal of 78794926506 is 60562949787.

78794926506 is a `hidden beast` number, since 7 + 87 + 9 + 49 + 2 + 6 + 506 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (78794926501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335026 + ... + 519453.

It is an arithmetic number, because the mean of its divisors is an integer number (3665719200).

Almost surely, 2^78794926506 is an apocalyptic number.

78794926506 is an abundant number, since it is smaller than the sum of its proper divisors (97159595094).

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

78794926506 is a wasteful number, since it uses less digits than its factorization.

78794926506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854643 (or 854640 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 78794926506 in words is "seventy-eight billion, seven hundred ninety-four million, nine hundred twenty-six thousand, five hundred six".