11975915993 has 8 divisors (see below), whose sum is σ = 12195556800. Its totient is φ = 11756830608.

The previous prime is 11975915971. The next prime is 11975916013. The reversal of 11975915993 is 39951957911.

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 11975915993 - 2⁶ = 11975915929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11975915093) 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, 95213 + ... + 181706.

It is an arithmetic number, because the mean of its divisors is an integer number (1524444600).

Almost surely, 2^11975915993 is an apocalyptic number.

It is an amenable number.

11975915993 is a deficient number, since it is larger than the sum of its proper divisors (219640807).

11975915993 is an equidigital number, since it uses as much as digits as its factorization.

11975915993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277711.

The product of its digits is 3444525, while the sum is 59.

The spelling of 11975915993 in words is "eleven billion, nine hundred seventy-five million, nine hundred fifteen thousand, nine hundred ninety-three".