11975540899 has 8 divisors (see below), whose sum is σ = 13688719200. Its totient is φ = 10262959296.

The previous prime is 11975540873. The next prime is 11975540947. The reversal of 11975540899 is 99804557911.

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 11975540899 - 2⁵ = 11975540867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11975540849) 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, 105304 + ... + 187189.

It is an arithmetic number, because the mean of its divisors is an integer number (1711089900).

Almost surely, 2^11975540899 is an apocalyptic number.

11975540899 is a deficient number, since it is larger than the sum of its proper divisors (1713178301).

11975540899 is an equidigital number, since it uses as much as digits as its factorization.

11975540899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298349.

The product of its (nonzero) digits is 4082400, while the sum is 58.

The spelling of 11975540899 in words is "eleven billion, nine hundred seventy-five million, five hundred forty thousand, eight hundred ninety-nine".