15523652197 has 2 divisors, whose sum is σ = 15523652198. Its totient is φ = 15523652196.

The previous prime is 15523652173. The next prime is 15523652201. The reversal of 15523652197 is 79125632551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14527239841 + 996412356 = 120529^2 + 31566^2 .

It is a cyclic number.

It is not a de Polignac number, because 15523652197 - 2¹⁹ = 15523127909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15523652117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7761826098 + 7761826099.

It is an arithmetic number, because the mean of its divisors is an integer number (7761826099).

Almost surely, 2^15523652197 is an apocalyptic number.

It is an amenable number.

15523652197 is a deficient number, since it is larger than the sum of its proper divisors (1).

15523652197 is an equidigital number, since it uses as much as digits as its factorization.

15523652197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567000, while the sum is 46.

The spelling of 15523652197 in words is "fifteen billion, five hundred twenty-three million, six hundred fifty-two thousand, one hundred ninety-seven".