11745897188 has 12 divisors (see below), whose sum is σ = 20557509420. Its totient is φ = 5872323072.

The previous prime is 11745897169. The next prime is 11745897199. The reversal of 11745897188 is 88179854711.

It can be written as a sum of positive squares in 2 ways, for example, as 5363804644 + 6382092544 = 73238^2 + 79888^2 .

It is a super-2 number, since 2×11745897188² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112781 + ... + 190292.

It is an arithmetic number, because the mean of its divisors is an integer number (1713125785).

Almost surely, 2^11745897188 is an apocalyptic number.

It is an amenable number.

11745897188 is a deficient number, since it is larger than the sum of its proper divisors (8811612232).

11745897188 is a wasteful number, since it uses less digits than its factorization.

11745897188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312766 (or 312764 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 59.

The spelling of 11745897188 in words is "eleven billion, seven hundred forty-five million, eight hundred ninety-seven thousand, one hundred eighty-eight".