11917393995 has 64 divisors (see below), whose sum is σ = 21472174080. Its totient is φ = 5610819456.

The previous prime is 11917393981. The next prime is 11917394017. The reversal of 11917393995 is 59939371911.

It is not a de Polignac number, because 11917393995 - 2⁴ = 11917393979 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2370054 + ... + 2375076.

It is an arithmetic number, because the mean of its divisors is an integer number (335502720).

Almost surely, 2^11917393995 is an apocalyptic number.

11917393995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11917393995 is a deficient number, since it is larger than the sum of its proper divisors (9554780085).

11917393995 is an equidigital number, since it uses as much as digits as its factorization.

11917393995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113 (or 5067 counting only the distinct ones).

The product of its digits is 2066715, while the sum is 57.

The spelling of 11917393995 in words is "eleven billion, nine hundred seventeen million, three hundred ninety-three thousand, nine hundred ninety-five".