15803206061 has 2 divisors, whose sum is σ = 15803206062. Its totient is φ = 15803206060.

The previous prime is 15803206051. The next prime is 15803206093. The reversal of 15803206061 is 16060230851.

It is a happy number.

It is an a-pointer prime, because the next prime (15803206093) can be obtained adding 15803206061 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15289322500 + 513883561 = 123650^2 + 22669^2 .

It is a cyclic number.

It is not a de Polignac number, because 15803206061 - 2⁶ = 15803205997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15803206051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7901603030 + 7901603031.

It is an arithmetic number, because the mean of its divisors is an integer number (7901603031).

Almost surely, 2^15803206061 is an apocalyptic number.

It is an amenable number.

15803206061 is a deficient number, since it is larger than the sum of its proper divisors (1).

15803206061 is an equidigital number, since it uses as much as digits as its factorization.

15803206061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 15803206061 in words is "fifteen billion, eight hundred three million, two hundred six thousand, sixty-one".