15660511051 has 8 divisors (see below), whose sum is σ = 15717390624. Its totient is φ = 15603673920.

The previous prime is 15660511039. The next prime is 15660511081. The reversal of 15660511051 is 15011506651.

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 15660511051 - 2¹³ = 15660502859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15660511021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854581 + ... + 872713.

It is an arithmetic number, because the mean of its divisors is an integer number (1964673828).

Almost surely, 2^15660511051 is an apocalyptic number.

15660511051 is a deficient number, since it is larger than the sum of its proper divisors (56879573).

15660511051 is a wasteful number, since it uses less digits than its factorization.

15660511051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21221.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 15660511051 in words is "fifteen billion, six hundred sixty million, five hundred eleven thousand, fifty-one".