78691288130 has 32 divisors (see below), whose sum is σ = 174331471104. Its totient is φ = 24904495296.

The previous prime is 78691288129. The next prime is 78691288141. The reversal of 78691288130 is 3188219687.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43236062 + ... + 43237881.

It is an arithmetic number, because the mean of its divisors is an integer number (5447858472).

Almost surely, 2^78691288130 is an apocalyptic number.

78691288130 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78691288130 is an abundant number, since it is smaller than the sum of its proper divisors (95640182974).

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

78691288130 is a wasteful number, since it uses less digits than its factorization.

78691288130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86473970.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The spelling of 78691288130 in words is "seventy-eight billion, six hundred ninety-one million, two hundred eighty-eight thousand, one hundred thirty".