11899011456 has 160 divisors (see below), whose sum is σ = 35482015800. Its totient is φ = 3958419456.

The previous prime is 11899011419. The next prime is 11899011463. The reversal of 11899011456 is 65411099811.

11899011456 is a `hidden beast` number, since 1 + 189 + 9 + 0 + 11 + 456 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7661176 + ... + 7662728.

Almost surely, 2^11899011456 is an apocalyptic number.

11899011456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11899011456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17741007900).

11899011456 is an abundant number, since it is smaller than the sum of its proper divisors (23583004344).

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

11899011456 is an equidigital number, since it uses as much as digits as its factorization.

11899011456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318 (or 2297 counting only the distinct ones).

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

The spelling of 11899011456 in words is "eleven billion, eight hundred ninety-nine million, eleven thousand, four hundred fifty-six".