15000660000561 has 32 divisors (see below), whose sum is σ = 20351870300160. Its totient is φ = 9826279017984.

The previous prime is 15000660000553. The next prime is 15000660000593. The reversal of 15000660000561 is 16500006600051.

15000660000561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15000660000561 - 2³ = 15000660000553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15000660000541) 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, 41903250 + ... + 42259716.

It is an arithmetic number, because the mean of its divisors is an integer number (635995946880).

Almost surely, 2^{15000660000561} is an apocalyptic number.

It is an amenable number.

15000660000561 is a deficient number, since it is larger than the sum of its proper divisors (5351210299599).

15000660000561 is a wasteful number, since it uses less digits than its factorization.

15000660000561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357405.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 15000660000561 in words is "fifteen trillion, six hundred sixty million, five hundred sixty-one", and thus it is an aban number.