11655540113550 has 48 divisors (see below), whose sum is σ = 29271634947840. Its totient is φ = 3068800431840.

The previous prime is 11655540113491. The next prime is 11655540113639. The reversal of 11655540113550 is 5531104555611.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491783092 + ... + 491806791.

It is an arithmetic number, because the mean of its divisors is an integer number (609825728080).

Almost surely, 2^{11655540113550} is an apocalyptic number.

11655540113550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11655540113550 is an abundant number, since it is smaller than the sum of its proper divisors (17616094834290).

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

11655540113550 is a wasteful number, since it uses less digits than its factorization.

11655540113550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983589977 (or 983589972 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 42.

The spelling of 11655540113550 in words is "eleven trillion, six hundred fifty-five billion, five hundred forty million, one hundred thirteen thousand, five hundred fifty".