76121207680 has 64 divisors (see below), whose sum is σ = 207974026080. Its totient is φ = 26098698240.

The previous prime is 76121207677. The next prime is 76121207681. The reversal of 76121207680 is 8670212167.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76121207681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8491191 + ... + 8500150.

Almost surely, 2^76121207680 is an apocalyptic number.

76121207680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

76121207680 is an abundant number, since it is smaller than the sum of its proper divisors (131852818400).

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

76121207680 is a wasteful number, since it uses less digits than its factorization.

76121207680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16991367 (or 16991355 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 76121207680 in words is "seventy-six billion, one hundred twenty-one million, two hundred seven thousand, six hundred eighty".