11875737666 has 64 divisors (see below), whose sum is σ = 26261262720. Its totient is φ = 3557598720.

The previous prime is 11875737631. The next prime is 11875737689. The reversal of 11875737666 is 66673757811.

It is a super-2 number, since 2×11875737666² (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 31 ways as a sum of consecutive naturals, for example, 530590 + ... + 552518.

It is an arithmetic number, because the mean of its divisors is an integer number (410332230).

Almost surely, 2^11875737666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11875737666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13130631360).

11875737666 is an abundant number, since it is smaller than the sum of its proper divisors (14385525054).

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

11875737666 is a wasteful number, since it uses less digits than its factorization.

11875737666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22131.

The product of its digits is 8890560, while the sum is 57.

The spelling of 11875737666 in words is "eleven billion, eight hundred seventy-five million, seven hundred thirty-seven thousand, six hundred sixty-six".