11695190985 has 12 divisors (see below), whose sum is σ = 20271664452. Its totient is φ = 6237435168.

The previous prime is 11695190981. The next prime is 11695190989. The reversal of 11695190985 is 58909159611.

11695190985 is a `hidden beast` number, since 116 + 9 + 519 + 0 + 9 + 8 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (11695190981) and next prime (11695190989).

It can be written as a sum of positive squares in 2 ways, for example, as 2335208976 + 9359982009 = 48324^2 + 96747^2 .

It is not a de Polignac number, because 11695190985 - 2² = 11695190981 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (11695190981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129946522 + ... + 129946611.

It is an arithmetic number, because the mean of its divisors is an integer number (1689305371).

Almost surely, 2^11695190985 is an apocalyptic number.

11695190985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11695190985 is a deficient number, since it is larger than the sum of its proper divisors (8576473467).

11695190985 is a wasteful number, since it uses less digits than its factorization.

11695190985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259893144 (or 259893141 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 54.

It can be divided in two parts, 116951 and 90985, that added together give a square (207936 = 456²).

The spelling of 11695190985 in words is "eleven billion, six hundred ninety-five million, one hundred ninety thousand, nine hundred eighty-five".