36162825821 has 4 divisors (see below), whose sum is σ = 36405529500. Its totient is φ = 35920122144.

The previous prime is 36162825767. The next prime is 36162825877. The reversal of 36162825821 is 12852826163.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4198392025 + 31964433796 = 64795^2 + 178786^2 .

It is a cyclic number.

It is not a de Polignac number, because 36162825821 - 2¹⁸ = 36162563677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36162825521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121351616 + ... + 121351913.

It is an arithmetic number, because the mean of its divisors is an integer number (9101382375).

Almost surely, 2^36162825821 is an apocalyptic number.

It is an amenable number.

36162825821 is a deficient number, since it is larger than the sum of its proper divisors (242703679).

36162825821 is a wasteful number, since it uses less digits than its factorization.

36162825821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242703678.

The product of its digits is 276480, while the sum is 44.

The spelling of 36162825821 in words is "thirty-six billion, one hundred sixty-two million, eight hundred twenty-five thousand, eight hundred twenty-one".