10989648840 has 32 divisors (see below), whose sum is σ = 32968946880. Its totient is φ = 2930572992.

The previous prime is 10989648833. The next prime is 10989648881. The reversal of 10989648840 is 4884698901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45790084 + ... + 45790323.

It is an arithmetic number, because the mean of its divisors is an integer number (1030279590).

Almost surely, 2^10989648840 is an apocalyptic number.

10989648840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10989648840 is an abundant number, since it is smaller than the sum of its proper divisors (21979298040).

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

10989648840 is a wasteful number, since it uses less digits than its factorization.

10989648840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91580421 (or 91580417 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 10989648840 in words is "ten billion, nine hundred eighty-nine million, six hundred forty-eight thousand, eight hundred forty".