80421281954881 has 16 divisors (see below), whose sum is σ = 94149151119360. Its totient is φ = 67262053375440.

The previous prime is 80421281954833. The next prime is 80421281954899. The reversal of 80421281954881 is 18845918212408.

It is not a de Polignac number, because 80421281954881 - 2¹¹ = 80421281952833 is a prime.

It is a super-2 number, since 2×80421281954881² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80421281952881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369138211 + ... + 369356008.

It is an arithmetic number, because the mean of its divisors is an integer number (5884321944960).

Almost surely, 2^{80421281954881} is an apocalyptic number.

It is an amenable number.

80421281954881 is a deficient number, since it is larger than the sum of its proper divisors (13727869164479).

80421281954881 is a wasteful number, since it uses less digits than its factorization.

80421281954881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738494604.

The product of its (nonzero) digits is 11796480, while the sum is 61.

The spelling of 80421281954881 in words is "eighty trillion, four hundred twenty-one billion, two hundred eighty-one million, nine hundred fifty-four thousand, eight hundred eighty-one".