11645117553 has 16 divisors (see below), whose sum is σ = 15700213760. Its totient is φ = 7677116496.

The previous prime is 11645117531. The next prime is 11645117563. The reversal of 11645117553 is 35571154611.

It is not a de Polignac number, because 11645117553 - 2⁶ = 11645117489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11645117563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67188 + ... + 166746.

It is an arithmetic number, because the mean of its divisors is an integer number (981263360).

Almost surely, 2^11645117553 is an apocalyptic number.

It is an amenable number.

11645117553 is a deficient number, since it is larger than the sum of its proper divisors (4055096207).

11645117553 is a wasteful number, since it uses less digits than its factorization.

11645117553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99996.

The product of its digits is 63000, while the sum is 39.

The spelling of 11645117553 in words is "eleven billion, six hundred forty-five million, one hundred seventeen thousand, five hundred fifty-three".