80902992757 has 2 divisors, whose sum is σ = 80902992758. Its totient is φ = 80902992756.

The previous prime is 80902992739. The next prime is 80902992767. The reversal of 80902992757 is 75729920908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46155795921 + 34747196836 = 214839^2 + 186406^2 .

It is a cyclic number.

It is not a de Polignac number, because 80902992757 - 2¹¹ = 80902990709 is a prime.

It is a super-2 number, since 2×80902992757² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80902992767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40451496378 + 40451496379.

It is an arithmetic number, because the mean of its divisors is an integer number (40451496379).

Almost surely, 2^80902992757 is an apocalyptic number.

It is an amenable number.

80902992757 is a deficient number, since it is larger than the sum of its proper divisors (1).

80902992757 is an equidigital number, since it uses as much as digits as its factorization.

80902992757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 58.

The spelling of 80902992757 in words is "eighty billion, nine hundred two million, nine hundred ninety-two thousand, seven hundred fifty-seven".