11917045745 has 16 divisors (see below), whose sum is σ = 15606188352. Its totient is φ = 8663780160.

The previous prime is 11917045739. The next prime is 11917045801. The reversal of 11917045745 is 54754071911.

It is not a de Polignac number, because 11917045745 - 2²⁸ = 11648610289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11917045696 and 11917045705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118259 + ... + 194471.

It is an arithmetic number, because the mean of its divisors is an integer number (975386772).

Almost surely, 2^11917045745 is an apocalyptic number.

It is an amenable number.

11917045745 is a deficient number, since it is larger than the sum of its proper divisors (3689142607).

11917045745 is a wasteful number, since it uses less digits than its factorization.

11917045745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79072.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 11917045745 in words is "eleven billion, nine hundred seventeen million, forty-five thousand, seven hundred forty-five".