11715665120 has 48 divisors (see below), whose sum is σ = 27766806480. Its totient is φ = 4671273984.

The previous prime is 11715665113. The next prime is 11715665123. The reversal of 11715665120 is 2156651711.

It is a super-2 number, since 2×11715665120² (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 (11715665123) 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, 66890 + ... + 167049.

It is an arithmetic number, because the mean of its divisors is an integer number (578475135).

Almost surely, 2^11715665120 is an apocalyptic number.

11715665120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11715665120 is an abundant number, since it is smaller than the sum of its proper divisors (16051141360).

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

11715665120 is a wasteful number, since it uses less digits than its factorization.

11715665120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234267 (or 234259 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 11715665120 in words is "eleven billion, seven hundred fifteen million, six hundred sixty-five thousand, one hundred twenty".