12037557566 has 8 divisors (see below), whose sum is σ = 18225087480. Its totient is φ = 5962528408.

The previous prime is 12037557547. The next prime is 12037557589. The reversal of 12037557566 is 66575573021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12037557566.

It is a congruent number.

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, 28124921 + ... + 28125348.

It is an arithmetic number, because the mean of its divisors is an integer number (2278135935).

Almost surely, 2^12037557566 is an apocalyptic number.

12037557566 is a deficient number, since it is larger than the sum of its proper divisors (6187529914).

12037557566 is a wasteful number, since it uses less digits than its factorization.

12037557566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56250378.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The spelling of 12037557566 in words is "twelve billion, thirty-seven million, five hundred fifty-seven thousand, five hundred sixty-six".