11801117911 has 8 divisors (see below), whose sum is σ = 13551523200. Its totient is φ = 10163642040.

The previous prime is 11801117837. The next prime is 11801117957. The reversal of 11801117911 is 11971110811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11801117911 - 2²⁷ = 11666900183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11801117971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28232131 + ... + 28232548.

It is an arithmetic number, because the mean of its divisors is an integer number (1693940400).

Almost surely, 2^11801117911 is an apocalyptic number.

11801117911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11801117911 is a deficient number, since it is larger than the sum of its proper divisors (1750405289).

11801117911 is a wasteful number, since it uses less digits than its factorization.

11801117911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56464709.

The product of its (nonzero) digits is 504, while the sum is 31.

The spelling of 11801117911 in words is "eleven billion, eight hundred one million, one hundred seventeen thousand, nine hundred eleven".