78834496401 has 16 divisors (see below), whose sum is σ = 120559326720. Its totient is φ = 50860964880.

The previous prime is 78834496397. The next prime is 78834496421. The reversal of 78834496401 is 10469443887.

78834496401 is a `hidden beast` number, since 7 + 88 + 34 + 496 + 40 + 1 = 666.

It is not a de Polignac number, because 78834496401 - 2² = 78834496397 is a prime.

It is a hoax number, since the sum of its digits (54) 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 (78834496421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47092650 + ... + 47094323.

It is an arithmetic number, because the mean of its divisors is an integer number (7534957920).

Almost surely, 2^78834496401 is an apocalyptic number.

It is an amenable number.

78834496401 is a deficient number, since it is larger than the sum of its proper divisors (41724830319).

78834496401 is a wasteful number, since it uses less digits than its factorization.

78834496401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94187013 (or 94187007 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 78834496401 in words is "seventy-eight billion, eight hundred thirty-four million, four hundred ninety-six thousand, four hundred one".