36253406021 has 18 divisors (see below), whose sum is σ = 43635186630. Its totient is φ = 29996878800.

The previous prime is 36253406017. The next prime is 36253406023. The reversal of 36253406021 is 12060435263.

It can be written as a sum of positive squares in only one way, i.e., 31252936225 + 5000469796 = 176785^2 + 70714^2 .

It is not a de Polignac number, because 36253406021 - 2² = 36253406017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36253406023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7174946 + ... + 7179996.

It is an arithmetic number, because the mean of its divisors is an integer number (2424177035).

Almost surely, 2^36253406021 is an apocalyptic number.

It is an amenable number.

36253406021 is a deficient number, since it is larger than the sum of its proper divisors (7381780609).

36253406021 is an frugal number, since it uses more digits than its factorization.

36253406021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10145 (or 5087 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 36253406021 in words is "thirty-six billion, two hundred fifty-three million, four hundred six thousand, twenty-one".