11918047407 has 64 divisors (see below), whose sum is σ = 19576995840. Its totient is φ = 6297782400.

The previous prime is 11918047397. The next prime is 11918047423. The reversal of 11918047407 is 70474081911.

It is not a de Polignac number, because 11918047407 - 2⁶ = 11918047343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11918047907) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4460682 + ... + 4463352.

It is an arithmetic number, because the mean of its divisors is an integer number (305890560).

Almost surely, 2^11918047407 is an apocalyptic number.

11918047407 is a deficient number, since it is larger than the sum of its proper divisors (7658948433).

11918047407 is a wasteful number, since it uses less digits than its factorization.

11918047407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964.

The product of its (nonzero) digits is 56448, while the sum is 42.

The spelling of 11918047407 in words is "eleven billion, nine hundred eighteen million, forty-seven thousand, four hundred seven".