11156065120 has 48 divisors (see below), whose sum is σ = 26589487680. Its totient is φ = 4422928384.

The previous prime is 11156065069. The next prime is 11156065127. The reversal of 11156065120 is 2156065111.

It is a happy number.

It is a super-2 number, since 2×11156065120² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156065127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290440 + ... + 326599.

It is an arithmetic number, because the mean of its divisors is an integer number (553947660).

Almost surely, 2^11156065120 is an apocalyptic number.

11156065120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11156065120 is an abundant number, since it is smaller than the sum of its proper divisors (15433422560).

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

11156065120 is a wasteful number, since it uses less digits than its factorization.

11156065120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617167 (or 617159 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

Subtracting from 11156065120 its reverse (2156065111), we obtain a palindrome (9000000009).

The spelling of 11156065120 in words is "eleven billion, one hundred fifty-six million, sixty-five thousand, one hundred twenty".