80616406589 has 2 divisors, whose sum is σ = 80616406590. Its totient is φ = 80616406588.

The previous prime is 80616406567. The next prime is 80616406603. The reversal of 80616406589 is 98560461608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69335842489 + 11280564100 = 263317^2 + 106210^2 .

It is a cyclic number.

It is not a de Polignac number, because 80616406589 - 2³⁶ = 11896929853 is a prime.

It is a super-2 number, since 2×80616406589² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80616406589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80616406529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40308203294 + 40308203295.

It is an arithmetic number, because the mean of its divisors is an integer number (40308203295).

Almost surely, 2^80616406589 is an apocalyptic number.

It is an amenable number.

80616406589 is a deficient number, since it is larger than the sum of its proper divisors (1).

80616406589 is an equidigital number, since it uses as much as digits as its factorization.

80616406589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 80616406589 in words is "eighty billion, six hundred sixteen million, four hundred six thousand, five hundred eighty-nine".