80421281954880 has 112 divisors (see below), whose sum is σ = 255350486975424. Its totient is φ = 21444590315520.

The previous prime is 80421281954833. The next prime is 80421281954899. The reversal of 80421281954880 is 8845918212408.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16957599 + ... + 21175521.

Almost surely, 2^{80421281954880} is an apocalyptic number.

80421281954880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80421281954880 is an abundant number, since it is smaller than the sum of its proper divisors (174929205020544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80421281954880 is a wasteful number, since it uses less digits than its factorization.

80421281954880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4237804 (or 4237794 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 60.

The spelling of 80421281954880 in words is "eighty trillion, four hundred twenty-one billion, two hundred eighty-one million, nine hundred fifty-four thousand, eight hundred eighty".