12388837101666 has 16 divisors (see below), whose sum is σ = 24903449201664. Its totient is φ = 4108649867504.

The previous prime is 12388837101653. The next prime is 12388837101709. The reversal of 12388837101666 is 66610173888321.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5240623650 + ... + 5240626013.

It is an arithmetic number, because the mean of its divisors is an integer number (1556465575104).

Almost surely, 2^{12388837101666} is an apocalyptic number.

12388837101666 is an abundant number, since it is smaller than the sum of its proper divisors (12514612099998).

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

12388837101666 is a wasteful number, since it uses less digits than its factorization.

12388837101666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481249865.

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 12388837101666 in words is "twelve trillion, three hundred eighty-eight billion, eight hundred thirty-seven million, one hundred one thousand, six hundred sixty-six".