80760881521 has 2 divisors, whose sum is σ = 80760881522. Its totient is φ = 80760881520.

The previous prime is 80760881503. The next prime is 80760881603. The reversal of 80760881521 is 12518806708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80733266496 + 27615025 = 284136^2 + 5255^2 .

It is a cyclic number.

It is not a de Polignac number, because 80760881521 - 2⁵ = 80760881489 is a prime.

It is not a weakly prime, because it can be changed into another prime (80760884521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40380440760 + 40380440761.

It is an arithmetic number, because the mean of its divisors is an integer number (40380440761).

Almost surely, 2^80760881521 is an apocalyptic number.

It is an amenable number.

80760881521 is a deficient number, since it is larger than the sum of its proper divisors (1).

80760881521 is an equidigital number, since it uses as much as digits as its factorization.

80760881521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 46.

The spelling of 80760881521 in words is "eighty billion, seven hundred sixty million, eight hundred eighty-one thousand, five hundred twenty-one".