76639194240 has 512 divisors, whose sum is σ = 298478960640. Its totient is φ = 16344514560.

The previous prime is 76639194223. The next prime is 76639194251. The reversal of 76639194240 is 4249193667.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12670897 + ... + 12676943.

It is an arithmetic number, because the mean of its divisors is an integer number (582966720).

Almost surely, 2^76639194240 is an apocalyptic number.

76639194240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76639194240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149239480320).

76639194240 is an abundant number, since it is smaller than the sum of its proper divisors (221839766400).

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

76639194240 is a wasteful number, since it uses less digits than its factorization.

76639194240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6140 (or 6128 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 76639194240 in words is "seventy-six billion, six hundred thirty-nine million, one hundred ninety-four thousand, two hundred forty".