11199007980 has 36 divisors (see below), whose sum is σ = 33970324752. Its totient is φ = 2986402080.

The previous prime is 11199007973. The next prime is 11199008003. The reversal of 11199007980 is 8970099111.

11199007980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×11199007980² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31108176 + ... + 31108535.

It is an arithmetic number, because the mean of its divisors is an integer number (943620132).

Almost surely, 2^11199007980 is an apocalyptic number.

11199007980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11199007980 is an abundant number, since it is smaller than the sum of its proper divisors (22771316772).

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

11199007980 is a wasteful number, since it uses less digits than its factorization.

11199007980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62216726 (or 62216721 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 45.

The spelling of 11199007980 in words is "eleven billion, one hundred ninety-nine million, seven thousand, nine hundred eighty".