15699894941 has 2 divisors, whose sum is σ = 15699894942. Its totient is φ = 15699894940.

The previous prime is 15699894937. The next prime is 15699894953. The reversal of 15699894941 is 14949899651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13117120900 + 2582774041 = 114530^2 + 50821^2 .

It is a cyclic number.

It is not a de Polignac number, because 15699894941 - 2² = 15699894937 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15699894641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7849947470 + 7849947471.

It is an arithmetic number, because the mean of its divisors is an integer number (7849947471).

Almost surely, 2^15699894941 is an apocalyptic number.

It is an amenable number.

15699894941 is a deficient number, since it is larger than the sum of its proper divisors (1).

15699894941 is an equidigital number, since it uses as much as digits as its factorization.

15699894941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25194240, while the sum is 65.

The spelling of 15699894941 in words is "fifteen billion, six hundred ninety-nine million, eight hundred ninety-four thousand, nine hundred forty-one".