11239898820 has 24 divisors (see below), whose sum is σ = 31471716864. Its totient is φ = 2997306336.

The previous prime is 11239898807. The next prime is 11239898843. The reversal of 11239898820 is 2889893211.

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, 93665764 + ... + 93665883.

It is an arithmetic number, because the mean of its divisors is an integer number (1311321536).

Almost surely, 2^11239898820 is an apocalyptic number.

11239898820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11239898820 is an abundant number, since it is smaller than the sum of its proper divisors (20231818044).

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

11239898820 is a wasteful number, since it uses less digits than its factorization.

11239898820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187331659 (or 187331657 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 51.

The spelling of 11239898820 in words is "eleven billion, two hundred thirty-nine million, eight hundred ninety-eight thousand, eight hundred twenty".