11166115120 has 40 divisors (see below), whose sum is σ = 26159419440. Its totient is φ = 4432346880.

The previous prime is 11166115109. The next prime is 11166115139. The reversal of 11166115120 is 2151166111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×11166115120² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522255 + ... + 543214.

It is an arithmetic number, because the mean of its divisors is an integer number (653985486).

Almost surely, 2^11166115120 is an apocalyptic number.

11166115120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11166115120 is an abundant number, since it is smaller than the sum of its proper divisors (14993304320).

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

11166115120 is a wasteful number, since it uses less digits than its factorization.

11166115120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065613 (or 1065607 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 25.

The spelling of 11166115120 in words is "eleven billion, one hundred sixty-six million, one hundred fifteen thousand, one hundred twenty".