11801275918 has 8 divisors (see below), whose sum is σ = 18133668000. Its totient is φ = 5756719920.

The previous prime is 11801275909. The next prime is 11801275939. The reversal of 11801275918 is 81957210811.

It is a happy number.

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

It is a super-2 number, since 2×11801275918² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71958918 + ... + 71959081.

It is an arithmetic number, because the mean of its divisors is an integer number (2266708500).

Almost surely, 2^11801275918 is an apocalyptic number.

11801275918 is a deficient number, since it is larger than the sum of its proper divisors (6332392082).

11801275918 is a wasteful number, since it uses less digits than its factorization.

11801275918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143918042.

The product of its (nonzero) digits is 40320, while the sum is 43.

The spelling of 11801275918 in words is "eleven billion, eight hundred one million, two hundred seventy-five thousand, nine hundred eighteen".