12142465566 has 128 divisors (see below), whose sum is σ = 30584881152. Its totient is φ = 3122064000.

The previous prime is 12142465553. The next prime is 12142465579. The reversal of 12142465566 is 66556424121.

It is an interprime number because it is at equal distance from previous prime (12142465553) and next prime (12142465579).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36684021 + ... + 36684351.

It is an arithmetic number, because the mean of its divisors is an integer number (238944384).

Almost surely, 2^12142465566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12142465566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15292440576).

12142465566 is an abundant number, since it is smaller than the sum of its proper divisors (18442415586).

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

12142465566 is a wasteful number, since it uses less digits than its factorization.

12142465566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918.

The product of its digits is 345600, while the sum is 42.

Adding to 12142465566 its reverse (66556424121), we get a palindrome (78698889687).

The spelling of 12142465566 in words is "twelve billion, one hundred forty-two million, four hundred sixty-five thousand, five hundred sixty-six".