15973413613 has 2 divisors, whose sum is σ = 15973413614. Its totient is φ = 15973413612.

The previous prime is 15973413583. The next prime is 15973413629. The reversal of 15973413613 is 31631437951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10276485129 + 5696928484 = 101373^2 + 75478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15973413613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15973413613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15973417613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7986706806 + 7986706807.

It is an arithmetic number, because the mean of its divisors is an integer number (7986706807).

Almost surely, 2^15973413613 is an apocalyptic number.

It is an amenable number.

15973413613 is a deficient number, since it is larger than the sum of its proper divisors (1).

15973413613 is an equidigital number, since it uses as much as digits as its factorization.

15973413613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The spelling of 15973413613 in words is "fifteen billion, nine hundred seventy-three million, four hundred thirteen thousand, six hundred thirteen".