15066610993 has 12 divisors (see below), whose sum is σ = 17538290100. Its totient is φ = 12905525472.

The previous prime is 15066610973. The next prime is 15066611009. The reversal of 15066610993 is 39901666051.

It can be written as a sum of positive squares in 2 ways, for example, as 8029414449 + 7037196544 = 89607^2 + 83888^2 .

It is a de Polignac number, because none of the positive numbers 2^k-15066610993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15066610913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29818 + ... + 176131.

It is an arithmetic number, because the mean of its divisors is an integer number (1461524175).

Almost surely, 2^15066610993 is an apocalyptic number.

It is an amenable number.

15066610993 is a deficient number, since it is larger than the sum of its proper divisors (2471679107).

15066610993 is a wasteful number, since it uses less digits than its factorization.

15066610993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207456 (or 207449 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 46.

The spelling of 15066610993 in words is "fifteen billion, sixty-six million, six hundred ten thousand, nine hundred ninety-three".