12010636665 has 80 divisors (see below), whose sum is σ = 22351855680. Its totient is φ = 6162791040.

The previous prime is 12010636661. The next prime is 12010636679. The reversal of 12010636665 is 56663601021.

It is not a de Polignac number, because 12010636665 - 2² = 12010636661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12010636661) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3604050 + ... + 3607380.

It is an arithmetic number, because the mean of its divisors is an integer number (279398196).

Almost surely, 2^12010636665 is an apocalyptic number.

12010636665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12010636665 is a deficient number, since it is larger than the sum of its proper divisors (10341219015).

12010636665 is a wasteful number, since it uses less digits than its factorization.

12010636665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684 (or 3675 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 12010636665 in words is "twelve billion, ten million, six hundred thirty-six thousand, six hundred sixty-five".