78628794090 has 64 divisors (see below), whose sum is σ = 235273697280. Its totient is φ = 16338450240.

The previous prime is 78628794073. The next prime is 78628794113. The reversal of 78628794090 is 9049782687.

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, 17016910 + ... + 17021529.

It is an arithmetic number, because the mean of its divisors is an integer number (3676151520).

Almost surely, 2^78628794090 is an apocalyptic number.

78628794090 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78628794090 is an abundant number, since it is smaller than the sum of its proper divisors (156644903190).

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

78628794090 is a wasteful number, since it uses less digits than its factorization.

78628794090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34038467.

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

The spelling of 78628794090 in words is "seventy-eight billion, six hundred twenty-eight million, seven hundred ninety-four thousand, ninety".