11655807785104 has 80 divisors (see below), whose sum is σ = 26414608519552. Its totient is φ = 4878232418304.

The previous prime is 11655807785081. The next prime is 11655807785159. The reversal of 11655807785104 is 40158770855611.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24970882 + ... + 25433374.

Almost surely, 2^{11655807785104} is an apocalyptic number.

11655807785104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11655807785104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13207304259776).

11655807785104 is an abundant number, since it is smaller than the sum of its proper divisors (14758800734448).

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

11655807785104 is a wasteful number, since it uses less digits than its factorization.

11655807785104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467784 (or 467778 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 58.

The spelling of 11655807785104 in words is "eleven trillion, six hundred fifty-five billion, eight hundred seven million, seven hundred eighty-five thousand, one hundred four".