15712666973 has 8 divisors (see below), whose sum is σ = 15732388056. Its totient is φ = 15692961600.

The previous prime is 15712666933. The next prime is 15712666979. The reversal of 15712666973 is 37966621751.

It can be written as a sum of positive squares in 4 ways, for example, as 3195980089 + 12516686884 = 56533^2 + 111878^2 .

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 15712666973 - 2⁶ = 15712666909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15712666979) 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, 4435583 + ... + 4439123.

It is an arithmetic number, because the mean of its divisors is an integer number (1966548507).

Almost surely, 2^15712666973 is an apocalyptic number.

It is an amenable number.

15712666973 is a deficient number, since it is larger than the sum of its proper divisors (19721083).

15712666973 is a wasteful number, since it uses less digits than its factorization.

15712666973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7855.

The product of its digits is 2857680, while the sum is 53.

The spelling of 15712666973 in words is "fifteen billion, seven hundred twelve million, six hundred sixty-six thousand, nine hundred seventy-three".