15722014993 has 2 divisors, whose sum is σ = 15722014994. Its totient is φ = 15722014992.

The previous prime is 15722014991. The next prime is 15722015039. The reversal of 15722014993 is 39941022751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7986460689 + 7735554304 = 89367^2 + 87952^2 .

It is a cyclic number.

It is not a de Polignac number, because 15722014993 - 2¹ = 15722014991 is a prime.

Together with 15722014991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (15722014991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7861007496 + 7861007497.

It is an arithmetic number, because the mean of its divisors is an integer number (7861007497).

Almost surely, 2^15722014993 is an apocalyptic number.

It is an amenable number.

15722014993 is a deficient number, since it is larger than the sum of its proper divisors (1).

15722014993 is an equidigital number, since it uses as much as digits as its factorization.

15722014993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 15722014993 in words is "fifteen billion, seven hundred twenty-two million, fourteen thousand, nine hundred ninety-three".