76921555344 has 80 divisors (see below), whose sum is σ = 202556351040. Its totient is φ = 25147169280.

The previous prime is 76921555343. The next prime is 76921555349. The reversal of 76921555344 is 44355512967.

It is not an unprimeable number, because it can be changed into a prime (76921555343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978162 + ... + 1053870.

It is an arithmetic number, because the mean of its divisors is an integer number (2531954388).

Almost surely, 2^76921555344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76921555344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101278175520).

76921555344 is an abundant number, since it is smaller than the sum of its proper divisors (125634795696).

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

76921555344 is a wasteful number, since it uses less digits than its factorization.

76921555344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76128 (or 76122 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 51.

The spelling of 76921555344 in words is "seventy-six billion, nine hundred twenty-one million, five hundred fifty-five thousand, three hundred forty-four".