12166614440 has 32 divisors (see below), whose sum is σ = 27388557000. Its totient is φ = 4864214784.

The previous prime is 12166614431. The next prime is 12166614479. The reversal of 12166614440 is 4441666121.

It can be written as a sum of positive squares in 4 ways, for example, as 11024580004 + 1142034436 = 104998^2 + 33794^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12166614440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6206 + ... + 156114.

Almost surely, 2^12166614440 is an apocalyptic number.

12166614440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12166614440 is an abundant number, since it is smaller than the sum of its proper divisors (15221942560).

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

12166614440 is a wasteful number, since it uses less digits than its factorization.

12166614440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151949 (or 151945 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 12166614440 in words is "twelve billion, one hundred sixty-six million, six hundred fourteen thousand, four hundred forty".