78833917680 has 160 divisors (see below), whose sum is σ = 286109687808. Its totient is φ = 17579673600.

The previous prime is 78833917667. The next prime is 78833917691. The reversal of 78833917680 is 8671933887.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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, 503376 + ... + 641135.

Almost surely, 2^78833917680 is an apocalyptic number.

78833917680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78833917680 is an abundant number, since it is smaller than the sum of its proper divisors (207275770128).

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

78833917680 is a wasteful number, since it uses less digits than its factorization.

78833917680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144575 (or 1144569 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 78833917680 in words is "seventy-eight billion, eight hundred thirty-three million, nine hundred seventeen thousand, six hundred eighty".