195210440763529 has 9 divisors (see below), whose sum is σ = 207369128834517. Its totient is φ = 183727250111424.

The previous prime is 195210440763463. The next prime is 195210440763577. The reversal of 195210440763529 is 925367044012591.

The square root of 195210440763529 is 13971773.

It is a perfect power (a square), and thus also a powerful number.

195210440763529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 344140623225 + 194866300140304 = 586635^2 + 13959452^2 .

It is not a de Polignac number, because 195210440763529 - 2¹⁷ = 195210440632457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195210440763589) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 237109207 + ... + 237931075.

Almost surely, 2^{195210440763529} is an apocalyptic number.

195210440763529 is the 13971773-rd square number.

195210440763529 is the 6985887-th centered octagonal number.

It is an amenable number.

195210440763529 is a deficient number, since it is larger than the sum of its proper divisors (12158688070988).

195210440763529 is an frugal number, since it uses more digits than its factorization.

195210440763529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643772 (or 821886 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 58.

The spelling of 195210440763529 in words is "one hundred ninety-five trillion, two hundred ten billion, four hundred forty million, seven hundred sixty-three thousand, five hundred twenty-nine".