12661812010 has 16 divisors (see below), whose sum is σ = 22799692800. Its totient is φ = 5062851216.

The previous prime is 12661811971. The next prime is 12661812013. The reversal of 12661812010 is 1021816621.

It is a self number, because there is not a number n which added to its sum of digits gives 12661812010.

It is not an unprimeable number, because it can be changed into a prime (12661812013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205650 + ... + 260029.

It is an arithmetic number, because the mean of its divisors is an integer number (1424980800).

Almost surely, 2^12661812010 is an apocalyptic number.

12661812010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12661812010 is a deficient number, since it is larger than the sum of its proper divisors (10137880790).

12661812010 is a wasteful number, since it uses less digits than its factorization.

12661812010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468405.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 12661812010 in words is "twelve billion, six hundred sixty-one million, eight hundred twelve thousand, ten".