13573570973 has 2 divisors, whose sum is σ = 13573570974. Its totient is φ = 13573570972.

The previous prime is 13573570909. The next prime is 13573570979. The reversal of 13573570973 is 37907537531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9139742404 + 4433828569 = 95602^2 + 66587^2 .

It is a cyclic number.

It is not a de Polignac number, because 13573570973 - 2⁶ = 13573570909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13573570979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6786785486 + 6786785487.

It is an arithmetic number, because the mean of its divisors is an integer number (6786785487).

Almost surely, 2^13573570973 is an apocalyptic number.

It is an amenable number.

13573570973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13573570973 is an equidigital number, since it uses as much as digits as its factorization.

13573570973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2083725, while the sum is 50.

The spelling of 13573570973 in words is "thirteen billion, five hundred seventy-three million, five hundred seventy thousand, nine hundred seventy-three".