15660123001 has 8 divisors (see below), whose sum is σ = 16036916544. Its totient is φ = 15283902480.

The previous prime is 15660122971. The next prime is 15660123013. The reversal of 15660123001 is 10032106651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15660123001 - 2¹³ = 15660114809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15660123601) 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, 87685 + ... + 197506.

It is an arithmetic number, because the mean of its divisors is an integer number (2004614568).

Almost surely, 2^15660123001 is an apocalyptic number.

It is an amenable number.

15660123001 is a deficient number, since it is larger than the sum of its proper divisors (376793543).

15660123001 is a wasteful number, since it uses less digits than its factorization.

15660123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286511.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 15660123001 its reverse (10032106651), we get a palindrome (25692229652).

The spelling of 15660123001 in words is "fifteen billion, six hundred sixty million, one hundred twenty-three thousand, one".