80877267494981 has 2 divisors, whose sum is σ = 80877267494982. Its totient is φ = 80877267494980.

The previous prime is 80877267494911. The next prime is 80877267495121. The reversal of 80877267494981 is 18949476277808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67132704837025 + 13744562657956 = 8193455^2 + 3707366^2 .

It is a cyclic number.

It is not a de Polignac number, because 80877267494981 - 2²⁶ = 80877200386117 is a prime.

It is a super-2 number, since 2×80877267494981² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80877267494896 and 80877267494905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80877267494911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40438633747490 + 40438633747491.

It is an arithmetic number, because the mean of its divisors is an integer number (40438633747491).

Almost surely, 2^{80877267494981} is an apocalyptic number.

It is an amenable number.

80877267494981 is a deficient number, since it is larger than the sum of its proper divisors (1).

80877267494981 is an equidigital number, since it uses as much as digits as its factorization.

80877267494981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2731180032, while the sum is 80.

The spelling of 80877267494981 in words is "eighty trillion, eight hundred seventy-seven billion, two hundred sixty-seven million, four hundred ninety-four thousand, nine hundred eighty-one".