11506607555 has 16 divisors (see below), whose sum is σ = 14411960640. Its totient is φ = 8802803328.

The previous prime is 11506607533. The next prime is 11506607557. The reversal of 11506607555 is 55570660511.

It is a cyclic number.

It is not a de Polignac number, because 11506607555 - 2⁶ = 11506607491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11506607557) 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, 543101 + ... + 563889.

It is an arithmetic number, because the mean of its divisors is an integer number (900747540).

Almost surely, 2^11506607555 is an apocalyptic number.

11506607555 is a deficient number, since it is larger than the sum of its proper divisors (2905353085).

11506607555 is a wasteful number, since it uses less digits than its factorization.

11506607555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25630.

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 11506607555 in words is "eleven billion, five hundred six million, six hundred seven thousand, five hundred fifty-five".