76545415566 has 12 divisors (see below), whose sum is σ = 165848400432. Its totient is φ = 25515138516.

The previous prime is 76545415547. The next prime is 76545415591. The reversal of 76545415566 is 66551454567.

76545415566 is a `hidden beast` number, since 7 + 6 + 5 + 45 + 41 + 556 + 6 = 666.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 2126261526 + ... + 2126261561.

It is an arithmetic number, because the mean of its divisors is an integer number (13820700036).

Almost surely, 2^76545415566 is an apocalyptic number.

76545415566 is an abundant number, since it is smaller than the sum of its proper divisors (89302984866).

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

76545415566 is a wasteful number, since it uses less digits than its factorization.

76545415566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252523095 (or 4252523092 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 76545415566 in words is "seventy-six billion, five hundred forty-five million, four hundred fifteen thousand, five hundred sixty-six".