11899108305 has 192 divisors, whose sum is σ = 25872929280. Its totient is φ = 5163637248.

The previous prime is 11899108301. The next prime is 11899108313. The reversal of 11899108305 is 50380199811.

It is not a de Polignac number, because 11899108305 - 2² = 11899108301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (11899108301) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 29972367 + ... + 29972763.

It is an arithmetic number, because the mean of its divisors is an integer number (134754840).

Almost surely, 2^11899108305 is an apocalyptic number.

11899108305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11899108305 is an abundant number, since it is smaller than the sum of its proper divisors (13973820975).

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

11899108305 is a wasteful number, since it uses less digits than its factorization.

11899108305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 45.

The spelling of 11899108305 in words is "eleven billion, eight hundred ninety-nine million, one hundred eight thousand, three hundred five".