11987090832 has 80 divisors (see below), whose sum is σ = 31373061440. Its totient is φ = 3943489536.

The previous prime is 11987090807. The next prime is 11987090839. The reversal of 11987090832 is 23809078911.

It is a super-2 number, since 2×11987090832² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (11987090839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1761228 + ... + 1768020.

It is an arithmetic number, because the mean of its divisors is an integer number (392163268).

Almost surely, 2^11987090832 is an apocalyptic number.

11987090832 is a gapful number since it is divisible by the number (12) 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 11987090832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15686530720).

11987090832 is an abundant number, since it is smaller than the sum of its proper divisors (19385970608).

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

11987090832 is a wasteful number, since it uses less digits than its factorization.

11987090832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7280 (or 7274 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The spelling of 11987090832 in words is "eleven billion, nine hundred eighty-seven million, ninety thousand, eight hundred thirty-two".