11818156207 has 16 divisors (see below), whose sum is σ = 13889893248. Its totient is φ = 9913315680.

The previous prime is 11818156153. The next prime is 11818156213. The reversal of 11818156207 is 70265181811.

It is a cyclic number.

It is not a de Polignac number, because 11818156207 - 2¹⁵ = 11818123439 is a prime.

It is a super-2 number, since 2×11818156207² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11818156207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11818156307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368268 + ... + 399070.

It is an arithmetic number, because the mean of its divisors is an integer number (868118328).

Almost surely, 2^11818156207 is an apocalyptic number.

11818156207 is a deficient number, since it is larger than the sum of its proper divisors (2071737041).

11818156207 is a wasteful number, since it uses less digits than its factorization.

11818156207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33510.

The product of its (nonzero) digits is 26880, while the sum is 40.

The spelling of 11818156207 in words is "eleven billion, eight hundred eighteen million, one hundred fifty-six thousand, two hundred seven".