80411206861 has 2 divisors, whose sum is σ = 80411206862. Its totient is φ = 80411206860.

The previous prime is 80411206831. The next prime is 80411206903. The reversal of 80411206861 is 16860211408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75573308836 + 4837898025 = 274906^2 + 69555^2 .

It is a cyclic number.

It is not a de Polignac number, because 80411206861 - 2²⁵ = 80377652429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80411206861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80411206831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40205603430 + 40205603431.

It is an arithmetic number, because the mean of its divisors is an integer number (40205603431).

Almost surely, 2^80411206861 is an apocalyptic number.

It is an amenable number.

80411206861 is a deficient number, since it is larger than the sum of its proper divisors (1).

80411206861 is an equidigital number, since it uses as much as digits as its factorization.

80411206861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 80411206861 in words is "eighty billion, four hundred eleven million, two hundred six thousand, eight hundred sixty-one".