12015616000661 has 32 divisors (see below), whose sum is σ = 14817882605568. Its totient is φ = 9487958950080.

The previous prime is 12015616000607. The next prime is 12015616000667. The reversal of 12015616000661 is 16600061651021.

It is not a de Polignac number, because 12015616000661 - 2²² = 12015611806357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015616000667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94456046 + ... + 94583168.

It is an arithmetic number, because the mean of its divisors is an integer number (463058831424).

Almost surely, 2^{12015616000661} is an apocalyptic number.

It is an amenable number.

12015616000661 is a deficient number, since it is larger than the sum of its proper divisors (2802266604907).

12015616000661 is a wasteful number, since it uses less digits than its factorization.

12015616000661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129201.

The product of its (nonzero) digits is 12960, while the sum is 35.

Adding to 12015616000661 its reverse (16600061651021), we get a palindrome (28615677651682).

The spelling of 12015616000661 in words is "twelve trillion, fifteen billion, six hundred sixteen million, six hundred sixty-one", and thus it is an aban number.