11608990980 has 96 divisors (see below), whose sum is σ = 33650684928. Its totient is φ = 2987212800.

The previous prime is 11608990901. The next prime is 11608991029. The reversal of 11608990980 is 8909980611.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 647740 + ... + 665420.

It is an arithmetic number, because the mean of its divisors is an integer number (350527968).

Almost surely, 2^11608990980 is an apocalyptic number.

11608990980 is a gapful number since it is divisible by the number (10) 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 11608990980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16825342464).

11608990980 is an abundant number, since it is smaller than the sum of its proper divisors (22041693948).

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

11608990980 is a wasteful number, since it uses less digits than its factorization.

11608990980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18077 (or 18075 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 51.

The spelling of 11608990980 in words is "eleven billion, six hundred eight million, nine hundred ninety thousand, nine hundred eighty".