11900117345 has 32 divisors (see below), whose sum is σ = 14789174400. Its totient is φ = 9186799104.

The previous prime is 11900117323. The next prime is 11900117347. The reversal of 11900117345 is 54371100911.

It is a cyclic number.

It is not a de Polignac number, because 11900117345 - 2²² = 11895923041 is a prime.

It is a super-2 number, since 2×11900117345² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11900117347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6962351 + ... + 6964059.

It is an arithmetic number, because the mean of its divisors is an integer number (462161700).

Almost surely, 2^11900117345 is an apocalyptic number.

It is an amenable number.

11900117345 is a deficient number, since it is larger than the sum of its proper divisors (2889057055).

11900117345 is a wasteful number, since it uses less digits than its factorization.

11900117345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129.

The product of its (nonzero) digits is 3780, while the sum is 32.

The spelling of 11900117345 in words is "eleven billion, nine hundred million, one hundred seventeen thousand, three hundred forty-five".