76819904556 has 12 divisors (see below), whose sum is σ = 179246443992. Its totient is φ = 25606634848.

The previous prime is 76819904537. The next prime is 76819904597. The reversal of 76819904556 is 65540991867.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 76819904556.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3200829345 + ... + 3200829368.

It is an arithmetic number, because the mean of its divisors is an integer number (14937203666).

Almost surely, 2^76819904556 is an apocalyptic number.

It is an amenable number.

76819904556 is an abundant number, since it is smaller than the sum of its proper divisors (102426539436).

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

76819904556 is a wasteful number, since it uses less digits than its factorization.

76819904556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401658720 (or 6401658718 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 60.

The spelling of 76819904556 in words is "seventy-six billion, eight hundred nineteen million, nine hundred four thousand, five hundred fifty-six".