12015165566061 has 24 divisors (see below), whose sum is σ = 19835403105024. Its totient is φ = 6865516715040.

The previous prime is 12015165565957. The next prime is 12015165566081. The reversal of 12015165566061 is 16066556151021.

12015165566061 is a `hidden beast` number, since 1 + 2 + 0 + 15 + 16 + 5 + 566 + 0 + 61 = 666.

It is not a de Polignac number, because 12015165566061 - 2⁹ = 12015165565549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12015165565998 and 12015165566016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015165566081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2561550 + ... + 5530991.

It is an arithmetic number, because the mean of its divisors is an integer number (826475129376).

Almost surely, 2^{12015165566061} is an apocalyptic number.

It is an amenable number.

12015165566061 is a deficient number, since it is larger than the sum of its proper divisors (7820237538963).

12015165566061 is a wasteful number, since it uses less digits than its factorization.

12015165566061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8116121 (or 8116118 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 12015165566061 in words is "twelve trillion, fifteen billion, one hundred sixty-five million, five hundred sixty-six thousand, sixty-one".