76505666545017 has 8 divisors (see below), whose sum is σ = 113341728214880. Its totient is φ = 51003777696660.

The previous prime is 76505666544973. The next prime is 76505666545019. The reversal of 76505666545017 is 71054566650567.

It is not a de Polignac number, because 76505666545017 - 2¹⁰ = 76505666543993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76505666545019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1416771602659 + ... + 1416771602712.

It is an arithmetic number, because the mean of its divisors is an integer number (14167716026860).

Almost surely, 2^{76505666545017} is an apocalyptic number.

It is an amenable number.

76505666545017 is a deficient number, since it is larger than the sum of its proper divisors (36836061669863).

76505666545017 is a wasteful number, since it uses less digits than its factorization.

76505666545017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833543205380 (or 2833543205374 counting only the distinct ones).

The product of its (nonzero) digits is 158760000, while the sum is 63.

The spelling of 76505666545017 in words is "seventy-six trillion, five hundred five billion, six hundred sixty-six million, five hundred forty-five thousand, seventeen".