11655413550 has 144 divisors (see below), whose sum is σ = 34352332560. Its totient is φ = 2809728000.

The previous prime is 11655413531. The next prime is 11655413579. The reversal of 11655413550 is 5531455611.

11655413550 is a `hidden beast` number, since 1 + 1 + 65 + 5 + 41 + 3 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 889446 + ... + 902454.

It is an arithmetic number, because the mean of its divisors is an integer number (238557865).

Almost surely, 2^11655413550 is an apocalyptic number.

11655413550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11655413550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17176166280).

11655413550 is an abundant number, since it is smaller than the sum of its proper divisors (22696919010).

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

11655413550 is a wasteful number, since it uses less digits than its factorization.

11655413550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13219 (or 13211 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 11655413550 in words is "eleven billion, six hundred fifty-five million, four hundred thirteen thousand, five hundred fifty".