12006599868 has 36 divisors (see below), whose sum is σ = 31474093560. Its totient is φ = 4002199632.

The previous prime is 12006599867. The next prime is 12006599897. The reversal of 12006599868 is 86899560021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12006599867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6175263 + ... + 6177206.

Almost surely, 2^12006599868 is an apocalyptic number.

12006599868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12006599868 is an abundant number, since it is smaller than the sum of its proper divisors (19467493692).

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

12006599868 is a wasteful number, since it uses less digits than its factorization.

12006599868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12352488 (or 12352474 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 12006599868 in words is "twelve billion, six million, five hundred ninety-nine thousand, eight hundred sixty-eight".