80890062921 has 24 divisors (see below), whose sum is σ = 118524365960. Its totient is φ = 53154994176.

The previous prime is 80890062901. The next prime is 80890062941. The reversal of 80890062921 is 12926009808.

It is an interprime number because it is at equal distance from previous prime (80890062901) and next prime (80890062941).

It can be written as a sum of positive squares in 4 ways, for example, as 18971205696 + 61918857225 = 137736^2 + 248835^2 .

It is not a de Polignac number, because 80890062921 - 2¹¹ = 80890060873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80890062901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24286 + ... + 402951.

Almost surely, 2^80890062921 is an apocalyptic number.

It is an amenable number.

80890062921 is a deficient number, since it is larger than the sum of its proper divisors (37634303039).

80890062921 is a wasteful number, since it uses less digits than its factorization.

80890062921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427545 (or 427542 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 80890062921 in words is "eighty billion, eight hundred ninety million, sixty-two thousand, nine hundred twenty-one".