11695987500 has 144 divisors (see below), whose sum is σ = 34677093024. Its totient is φ = 3067200000.

The previous prime is 11695987469. The next prime is 11695987507. The reversal of 11695987500 is 578959611.

It is a super-2 number, since 2×11695987500² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11695987507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2284944 + ... + 2290056.

It is an arithmetic number, because the mean of its divisors is an integer number (240813146).

Almost surely, 2^11695987500 is an apocalyptic number.

11695987500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11695987500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17338546512).

11695987500 is an abundant number, since it is smaller than the sum of its proper divisors (22981105524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11695987500 is an equidigital number, since it uses as much as digits as its factorization.

11695987500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5206 (or 5184 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 51.

The spelling of 11695987500 in words is "eleven billion, six hundred ninety-five million, nine hundred eighty-seven thousand, five hundred".