195524036761 has 3 divisors (see below), whose sum is σ = 195524478943. Its totient is φ = 195523594580.

The previous prime is 195524036731. The next prime is 195524036767. The reversal of 195524036761 is 167630425591.

The square root of 195524036761 is 442181.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 47991226761 + 147532810000 = 219069^2 + 384100^2 .

It is not a de Polignac number, because 195524036761 - 2¹³ = 195524028569 is a prime.

It is a super-2 number, since 2×195524036761² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195524036767) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 221091 + ... + 663271.

Almost surely, 2^195524036761 is an apocalyptic number.

195524036761 is the 442181-st square number.

195524036761 is the 221091-st centered octagonal number.

It is an amenable number.

195524036761 is a deficient number, since it is larger than the sum of its proper divisors (442182).

195524036761 is an frugal number, since it uses more digits than its factorization.

195524036761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884362 (or 442181 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

Multiplying 195524036761 by its sum of digits (49), we get a square (9580677801289 = 3095267²).

The spelling of 195524036761 in words is "one hundred ninety-five billion, five hundred twenty-four million, thirty-six thousand, seven hundred sixty-one".