11555616660120 has 192 divisors, whose sum is σ = 40763122283520. Its totient is φ = 2822062021632.

The previous prime is 11555616660073. The next prime is 11555616660131. The reversal of 11555616660120 is 2106661655511.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9126699 + ... + 10315418.

It is an arithmetic number, because the mean of its divisors is an integer number (212307928560).

Almost surely, 2^{11555616660120} is an apocalyptic number.

11555616660120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11555616660120 is an abundant number, since it is smaller than the sum of its proper divisors (29207505623400).

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

11555616660120 is a wasteful number, since it uses less digits than its factorization.

11555616660120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19442274 (or 19442267 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 11555616660120 in words is "eleven trillion, five hundred fifty-five billion, six hundred sixteen million, six hundred sixty thousand, one hundred twenty".