11999999995 has 16 divisors (see below), whose sum is σ = 14469840000. Its totient is φ = 9553495168.

The previous prime is 11999999983. The next prime is 12000000073. The reversal of 11999999995 is 59999999911.

It is a cyclic number.

It is not a de Polignac number, because 11999999995 - 2²¹ = 11997902843 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2757081 + ... + 2761429.

It is an arithmetic number, because the mean of its divisors is an integer number (904365000).

Almost surely, 2^11999999995 is an apocalyptic number.

11999999995 is a deficient number, since it is larger than the sum of its proper divisors (2469840005).

11999999995 is a wasteful number, since it uses less digits than its factorization.

11999999995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6902.

The product of its digits is 215233605, while the sum is 79.

It can be divided in two parts, 1199999999 and 5, that multiplied together give a palindrome (5999999995).

The spelling of 11999999995 in words is "eleven billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-five".