490981893680 has 20 divisors (see below), whose sum is σ = 1141532902992. Its totient is φ = 196392757440.

The previous prime is 490981893667. The next prime is 490981893709. The reversal of 490981893680 is 86398189094.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3068636756 + ... + 3068636915.

Almost surely, 2^490981893680 is an apocalyptic number.

490981893680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

490981893680 is an abundant number, since it is smaller than the sum of its proper divisors (650551009312).

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

490981893680 is a wasteful number, since it uses less digits than its factorization.

490981893680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6137273684 (or 6137273678 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 65.

The spelling of 490981893680 in words is "four hundred ninety billion, nine hundred eighty-one million, eight hundred ninety-three thousand, six hundred eighty".