11745897187 has 4 divisors (see below), whose sum is σ = 11746833256. Its totient is φ = 11744961120.

The previous prime is 11745897169. The next prime is 11745897199. The reversal of 11745897187 is 78179854711.

11745897187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11745897187 is a prime.

It is a super-2 number, since 2×11745897187² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11745898187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448953 + ... + 474394.

It is an arithmetic number, because the mean of its divisors is an integer number (2936708314).

Almost surely, 2^11745897187 is an apocalyptic number.

11745897187 is a deficient number, since it is larger than the sum of its proper divisors (936069).

11745897187 is an equidigital number, since it uses as much as digits as its factorization.

11745897187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936068.

The product of its digits is 3951360, while the sum is 58.

The spelling of 11745897187 in words is "eleven billion, seven hundred forty-five million, eight hundred ninety-seven thousand, one hundred eighty-seven".