11956974499 has 4 divisors (see below), whose sum is σ = 12037222800. Its totient is φ = 11876726200.

The previous prime is 11956974473. The next prime is 11956974509. The reversal of 11956974499 is 99447965911.

11956974499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11956974499 - 2⁷ = 11956974371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11956974499.

It is not an unprimeable number, because it can be changed into a prime (11956974409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40123927 + ... + 40124224.

It is an arithmetic number, because the mean of its divisors is an integer number (3009305700).

Almost surely, 2^11956974499 is an apocalyptic number.

11956974499 is a deficient number, since it is larger than the sum of its proper divisors (80248301).

11956974499 is an equidigital number, since it uses as much as digits as its factorization.

11956974499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80248300.

The product of its digits is 22044960, while the sum is 64.

The spelling of 11956974499 in words is "eleven billion, nine hundred fifty-six million, nine hundred seventy-four thousand, four hundred ninety-nine".