11655506756655 has 48 divisors (see below), whose sum is σ = 20305946396736. Its totient is φ = 6184618237440.

The previous prime is 11655506756609. The next prime is 11655506756753. The reversal of 11655506756655 is 55665760555611.

11655506756655 is a `hidden beast` number, since 1 + 1 + 6 + 5 + 5 + 5 + 0 + 67 + 566 + 5 + 5 = 666.

It is not a de Polignac number, because 11655506756655 - 2⁶ = 11655506756591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11655506756592 and 11655506756601.

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, 8511435 + ... + 9785475.

It is an arithmetic number, because the mean of its divisors is an integer number (423040549932).

Almost surely, 2^{11655506756655} is an apocalyptic number.

11655506756655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11655506756655 is a deficient number, since it is larger than the sum of its proper divisors (8650439640081).

11655506756655 is a wasteful number, since it uses less digits than its factorization.

11655506756655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275088 (or 1275085 counting only the distinct ones).

The product of its (nonzero) digits is 141750000, while the sum is 63.

The spelling of 11655506756655 in words is "eleven trillion, six hundred fifty-five billion, five hundred six million, seven hundred fifty-six thousand, six hundred fifty-five".