11787708897 has 16 divisors (see below), whose sum is σ = 18490524480. Its totient is φ = 7396209216.

The previous prime is 11787708893. The next prime is 11787708917. The reversal of 11787708897 is 79880778711.

It is not a de Polignac number, because 11787708897 - 2² = 11787708893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11787708893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12840183 + ... + 12841100.

It is an arithmetic number, because the mean of its divisors is an integer number (1155657780).

Almost surely, 2^11787708897 is an apocalyptic number.

11787708897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11787708897 is a deficient number, since it is larger than the sum of its proper divisors (6702815583).

11787708897 is a wasteful number, since it uses less digits than its factorization.

11787708897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25681309 (or 25681303 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 63.

The spelling of 11787708897 in words is "eleven billion, seven hundred eighty-seven million, seven hundred eight thousand, eight hundred ninety-seven".