80733901081 has 2 divisors, whose sum is σ = 80733901082. Its totient is φ = 80733901080.

The previous prime is 80733901057. The next prime is 80733901093. The reversal of 80733901081 is 18010933708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79746936025 + 986965056 = 282395^2 + 31416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80733901081 is a prime.

It is a super-2 number, since 2×80733901081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80733901021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40366950540 + 40366950541.

It is an arithmetic number, because the mean of its divisors is an integer number (40366950541).

Almost surely, 2^80733901081 is an apocalyptic number.

It is an amenable number.

80733901081 is a deficient number, since it is larger than the sum of its proper divisors (1).

80733901081 is an equidigital number, since it uses as much as digits as its factorization.

80733901081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 80733901081 in words is "eighty billion, seven hundred thirty-three million, nine hundred one thousand, eighty-one".