11990513088 has 168 divisors, whose sum is σ = 36541728288. Its totient is φ = 3750709248.

The previous prime is 11990513071. The next prime is 11990513131. The reversal of 11990513088 is 88031509911.

It is a super-2 number, since 2×11990513088² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 693606 + ... + 710682.

Almost surely, 2^11990513088 is an apocalyptic number.

11990513088 is a gapful number since it is divisible by the number (18) 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 11990513088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18270864144).

11990513088 is an abundant number, since it is smaller than the sum of its proper divisors (24551215200).

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

11990513088 is a wasteful number, since it uses less digits than its factorization.

11990513088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17171 (or 17158 counting only the distinct ones).

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

The spelling of 11990513088 in words is "eleven billion, nine hundred ninety million, five hundred thirteen thousand, eighty-eight".