36556532121 has 4 divisors (see below), whose sum is σ = 48742042832. Its totient is φ = 24371021412.

The previous prime is 36556532119. The next prime is 36556532203. The reversal of 36556532121 is 12123565563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 36556532121 - 2¹ = 36556532119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 36556532121.

It is not an unprimeable number, because it can be changed into a prime (36556532921) 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, 6092755351 + ... + 6092755356.

It is an arithmetic number, because the mean of its divisors is an integer number (12185510708).

Almost surely, 2^36556532121 is an apocalyptic number.

It is an amenable number.

36556532121 is a deficient number, since it is larger than the sum of its proper divisors (12185510711).

36556532121 is a wasteful number, since it uses less digits than its factorization.

36556532121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12185510710.

The product of its digits is 162000, while the sum is 39.

The spelling of 36556532121 in words is "thirty-six billion, five hundred fifty-six million, five hundred thirty-two thousand, one hundred twenty-one".