36145225631 has 4 divisors (see below), whose sum is σ = 38271415392. Its totient is φ = 34019035872.

The previous prime is 36145225607. The next prime is 36145225661. The reversal of 36145225631 is 13652254163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13652254163 = 47659 ⋅286457.

It is a cyclic number.

It is not a de Polignac number, because 36145225631 - 2¹⁸ = 36144963487 is a prime.

It is a super-2 number, since 2×36145225631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36145225661) 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, 1063094855 + ... + 1063094888.

It is an arithmetic number, because the mean of its divisors is an integer number (9567853848).

Almost surely, 2^36145225631 is an apocalyptic number.

36145225631 is a deficient number, since it is larger than the sum of its proper divisors (2126189761).

36145225631 is a wasteful number, since it uses less digits than its factorization.

36145225631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126189760.

The product of its digits is 129600, while the sum is 38.

Adding to 36145225631 its reverse (13652254163), we get a palindrome (49797479794).

The spelling of 36145225631 in words is "thirty-six billion, one hundred forty-five million, two hundred twenty-five thousand, six hundred thirty-one".