15729462942173 has 4 divisors (see below), whose sum is σ = 15742387728060. Its totient is φ = 15716538156288.

The previous prime is 15729462942131. The next prime is 15729462942181. The reversal of 15729462942173 is 37124926492751.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3759399132889 + 11970063809284 = 1938917^2 + 3459778^2 .

It is a cyclic number.

It is not a de Polignac number, because 15729462942173 - 2¹⁴ = 15729462925789 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 (15729462942073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6462391118 + ... + 6462393551.

It is an arithmetic number, because the mean of its divisors is an integer number (3935596932015).

Almost surely, 2^{15729462942173} is an apocalyptic number.

It is an amenable number.

15729462942173 is a deficient number, since it is larger than the sum of its proper divisors (12924785887).

15729462942173 is a wasteful number, since it uses less digits than its factorization.

15729462942173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12924785886.

The product of its digits is 45722880, while the sum is 62.

The spelling of 15729462942173 in words is "fifteen trillion, seven hundred twenty-nine billion, four hundred sixty-two million, nine hundred forty-two thousand, one hundred seventy-three".