981936980880 has 80 divisors (see below), whose sum is σ = 3142198362624. Its totient is φ = 253403089920.

The previous prime is 981936980873. The next prime is 981936980929. The reversal of 981936980880 is 88089639189.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65982949 + ... + 65997828.

Almost surely, 2^981936980880 is an apocalyptic number.

It is an amenable number.

981936980880 is an abundant number, since it is smaller than the sum of its proper divisors (2160261381744).

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

981936980880 is a wasteful number, since it uses less digits than its factorization.

981936980880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131980824 (or 131980818 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 69.

The spelling of 981936980880 in words is "nine hundred eighty-one billion, nine hundred thirty-six million, nine hundred eighty thousand, eight hundred eighty".