15728572973 has 2 divisors, whose sum is σ = 15728572974. Its totient is φ = 15728572972.

The previous prime is 15728572969. The next prime is 15728573041. The reversal of 15728572973 is 37927582751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15664524964 + 64048009 = 125158^2 + 8003^2 .

It is a cyclic number.

It is not a de Polignac number, because 15728572973 - 2² = 15728572969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15728574973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7864286486 + 7864286487.

It is an arithmetic number, because the mean of its divisors is an integer number (7864286487).

Almost surely, 2^15728572973 is an apocalyptic number.

It is an amenable number.

15728572973 is a deficient number, since it is larger than the sum of its proper divisors (1).

15728572973 is an equidigital number, since it uses as much as digits as its factorization.

15728572973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7408800, while the sum is 56.

The spelling of 15728572973 in words is "fifteen billion, seven hundred twenty-eight million, five hundred seventy-two thousand, nine hundred seventy-three".