11993576655 has 8 divisors (see below), whose sum is σ = 19189722672. Its totient is φ = 6396574208.

The previous prime is 11993576633. The next prime is 11993576657. The reversal of 11993576655 is 55667539911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11993576655 - 2⁶ = 11993576591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11993576595 and 11993576604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11993576657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399785874 + ... + 399785903.

It is an arithmetic number, because the mean of its divisors is an integer number (2398715334).

Almost surely, 2^11993576655 is an apocalyptic number.

11993576655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11993576655 is a deficient number, since it is larger than the sum of its proper divisors (7196146017).

11993576655 is an equidigital number, since it uses as much as digits as its factorization.

11993576655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799571785.

The product of its digits is 7654500, while the sum is 57.

The spelling of 11993576655 in words is "eleven billion, nine hundred ninety-three million, five hundred seventy-six thousand, six hundred fifty-five".