36542527921 has 3 divisors (see below), whose sum is σ = 36542719083. Its totient is φ = 36542336760.

The previous prime is 36542527919. The next prime is 36542527991. The reversal of 36542527921 is 12972524563.

The square root of 36542527921 is 191161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12972524563 = 379 ⋅34228297.

It can be written as a sum of positive squares in only one way, i.e., 35077169521 + 1465358400 = 187289^2 + 38280^2 .

It is not a de Polignac number, because 36542527921 - 2¹ = 36542527919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36542527991) 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, 95581 + ... + 286741.

It is an arithmetic number, because the mean of its divisors is an integer number (12180906361).

Almost surely, 2^36542527921 is an apocalyptic number.

36542527921 is the 191161-st square number.

36542527921 is the 95581-st centered octagonal number.

It is an amenable number.

36542527921 is a deficient number, since it is larger than the sum of its proper divisors (191162).

36542527921 is an frugal number, since it uses more digits than its factorization.

36542527921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382322 (or 191161 counting only the distinct ones).

The product of its digits is 907200, while the sum is 46.

The spelling of 36542527921 in words is "thirty-six billion, five hundred forty-two million, five hundred twenty-seven thousand, nine hundred twenty-one".