76505666545020 has 48 divisors (see below), whose sum is σ = 214492989180960. Its totient is φ = 20375118425856.

The previous prime is 76505666545019. The next prime is 76505666545069. The reversal of 76505666545020 is 2054566650567.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824723635 + ... + 824816394.

It is an arithmetic number, because the mean of its divisors is an integer number (4468603941270).

Almost surely, 2^{76505666545020} is an apocalyptic number.

It is an amenable number.

76505666545020 is an abundant number, since it is smaller than the sum of its proper divisors (137987322635940).

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

76505666545020 is a wasteful number, since it uses less digits than its factorization.

76505666545020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649540814 (or 1649540812 counting only the distinct ones).

The product of its (nonzero) digits is 45360000, while the sum is 57.

The spelling of 76505666545020 in words is "seventy-six trillion, five hundred five billion, six hundred sixty-six million, five hundred forty-five thousand, twenty".