11990105910 has 48 divisors (see below), whose sum is σ = 32179904640. Its totient is φ = 3094220160.

The previous prime is 11990105909. The next prime is 11990105917. The reversal of 11990105910 is 1950109911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11990105917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2145975 + ... + 2151554.

It is an arithmetic number, because the mean of its divisors is an integer number (670414680).

Almost surely, 2^11990105910 is an apocalyptic number.

11990105910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11990105910 is an abundant number, since it is smaller than the sum of its proper divisors (20189798730).

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

11990105910 is a wasteful number, since it uses less digits than its factorization.

11990105910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297573 (or 4297570 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 36.

The spelling of 11990105910 in words is "eleven billion, nine hundred ninety million, one hundred five thousand, nine hundred ten".