76213121568 has 48 divisors (see below), whose sum is σ = 204712000416. Its totient is φ = 24813573120.

The previous prime is 76213121449. The next prime is 76213121597. The reversal of 76213121568 is 86512131267.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9227113 + ... + 9235368.

It is an arithmetic number, because the mean of its divisors is an integer number (4264833342).

Almost surely, 2^76213121568 is an apocalyptic number.

It is an amenable number.

76213121568 is an abundant number, since it is smaller than the sum of its proper divisors (128498878848).

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

76213121568 is a wasteful number, since it uses less digits than its factorization.

76213121568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18462537 (or 18462529 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The spelling of 76213121568 in words is "seventy-six billion, two hundred thirteen million, one hundred twenty-one thousand, five hundred sixty-eight".