15694473241 has 2 divisors, whose sum is σ = 15694473242. Its totient is φ = 15694473240.

The previous prime is 15694473217. The next prime is 15694473299. The reversal of 15694473241 is 14237449651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9820017216 + 5874456025 = 99096^2 + 76645^2 .

It is an emirp because it is prime and its reverse (14237449651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15694473241 - 2²⁵ = 15660918809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15694473191 and 15694473200.

It is not a weakly prime, because it can be changed into another prime (15694476241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7847236620 + 7847236621.

It is an arithmetic number, because the mean of its divisors is an integer number (7847236621).

Almost surely, 2^15694473241 is an apocalyptic number.

It is an amenable number.

15694473241 is a deficient number, since it is larger than the sum of its proper divisors (1).

15694473241 is an equidigital number, since it uses as much as digits as its factorization.

15694473241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The spelling of 15694473241 in words is "fifteen billion, six hundred ninety-four million, four hundred seventy-three thousand, two hundred forty-one".