11973611418 has 16 divisors (see below), whose sum is σ = 24033678240. Its totient is φ = 3976794576.

The previous prime is 11973611413. The next prime is 11973611443. The reversal of 11973611418 is 81411637911.

It is a self number, because there is not a number n which added to its sum of digits gives 11973611418.

It is not an unprimeable number, because it can be changed into a prime (11973611413) 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, 3600508 + ... + 3603831.

It is an arithmetic number, because the mean of its divisors is an integer number (1502104890).

Almost surely, 2^11973611418 is an apocalyptic number.

11973611418 is an abundant number, since it is smaller than the sum of its proper divisors (12060066822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11973611418 is a wasteful number, since it uses less digits than its factorization.

11973611418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7204621.

The product of its digits is 36288, while the sum is 42.

The spelling of 11973611418 in words is "eleven billion, nine hundred seventy-three million, six hundred eleven thousand, four hundred eighteen".