11601005655 has 16 divisors (see below), whose sum is σ = 19538536320. Its totient is φ = 5861560608.

The previous prime is 11601005651. The next prime is 11601005687. The reversal of 11601005655 is 55650010611.

It is not a de Polignac number, because 11601005655 - 2² = 11601005651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601005651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20352357 + ... + 20352926.

It is an arithmetic number, because the mean of its divisors is an integer number (1221158520).

Almost surely, 2^11601005655 is an apocalyptic number.

11601005655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11601005655 is a deficient number, since it is larger than the sum of its proper divisors (7937530665).

11601005655 is a wasteful number, since it uses less digits than its factorization.

11601005655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40705310.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 11601005655 in words is "eleven billion, six hundred one million, five thousand, six hundred fifty-five".