981857498280 has 64 divisors (see below), whose sum is σ = 2945783332800. Its totient is φ = 261809925120.

The previous prime is 981857498273. The next prime is 981857498311. The reversal of 981857498280 is 82894758189.

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, 1432851 + ... + 2004189.

It is an arithmetic number, because the mean of its divisors is an integer number (46027864575).

Almost surely, 2^981857498280 is an apocalyptic number.

It is an amenable number.

981857498280 is an abundant number, since it is smaller than the sum of its proper divisors (1963925834520).

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

981857498280 is a wasteful number, since it uses less digits than its factorization.

981857498280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585674 (or 585670 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 69.

The spelling of 981857498280 in words is "nine hundred eighty-one billion, eight hundred fifty-seven million, four hundred ninety-eight thousand, two hundred eighty".