80460640397 has 2 divisors, whose sum is σ = 80460640398. Its totient is φ = 80460640396.

The previous prime is 80460640367. The next prime is 80460640439. The reversal of 80460640397 is 79304606408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80354673961 + 105966436 = 283469^2 + 10294^2 .

It is a cyclic number.

It is not a de Polignac number, because 80460640397 - 2⁶ = 80460640333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80460640357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40230320198 + 40230320199.

It is an arithmetic number, because the mean of its divisors is an integer number (40230320199).

Almost surely, 2^80460640397 is an apocalyptic number.

It is an amenable number.

80460640397 is a deficient number, since it is larger than the sum of its proper divisors (1).

80460640397 is an equidigital number, since it uses as much as digits as its factorization.

80460640397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 80460640397 in words is "eighty billion, four hundred sixty million, six hundred forty thousand, three hundred ninety-seven".