80718546792591 has 8 divisors (see below), whose sum is σ = 119583032285360. Its totient is φ = 53812364528376.

The previous prime is 80718546792571. The next prime is 80718546792599. The reversal of 80718546792591 is 19529764581708.

It is a happy number.

80718546792591 is a `hidden beast` number, since 8 + 0 + 7 + 1 + 8 + 546 + 79 + 2 + 5 + 9 + 1 = 666.

It is not a de Polignac number, because 80718546792591 - 2¹¹ = 80718546790543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80718546792599) 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, 1494787903540 + ... + 1494787903593.

It is an arithmetic number, because the mean of its divisors is an integer number (14947879035670).

Almost surely, 2^{80718546792591} is an apocalyptic number.

80718546792591 is a deficient number, since it is larger than the sum of its proper divisors (38864485492769).

80718546792591 is a wasteful number, since it uses less digits than its factorization.

80718546792591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989575807142 (or 2989575807136 counting only the distinct ones).

The product of its (nonzero) digits is 304819200, while the sum is 72.

The spelling of 80718546792591 in words is "eighty trillion, seven hundred eighteen billion, five hundred forty-six million, seven hundred ninety-two thousand, five hundred ninety-one".