80281892657 has 2 divisors, whose sum is σ = 80281892658. Its totient is φ = 80281892656.

The previous prime is 80281892627. The next prime is 80281892681. The reversal of 80281892657 is 75629818208.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69395891761 + 10886000896 = 263431^2 + 104336^2 .

It is a cyclic number.

It is not a de Polignac number, because 80281892657 - 2¹⁶ = 80281827121 is a prime.

It is not a weakly prime, because it can be changed into another prime (80281892627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40140946328 + 40140946329.

It is an arithmetic number, because the mean of its divisors is an integer number (40140946329).

Almost surely, 2^80281892657 is an apocalyptic number.

It is an amenable number.

80281892657 is a deficient number, since it is larger than the sum of its proper divisors (1).

80281892657 is an equidigital number, since it uses as much as digits as its factorization.

80281892657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 80281892657 in words is "eighty billion, two hundred eighty-one million, eight hundred ninety-two thousand, six hundred fifty-seven".