636032321113381 has 2 divisors, whose sum is σ = 636032321113382. Its totient is φ = 636032321113380.

The previous prime is 636032321113369. The next prime is 636032321113393. The reversal of 636032321113381 is 183311123230636.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (636032321113369) and next prime (636032321113393).

It can be written as a sum of positive squares in only one way, i.e., 360793271604481 + 275239049508900 = 18994559^2 + 16590330^2 .

It is a cyclic number.

It is not a de Polignac number, because 636032321113381 - 2¹¹ = 636032321111333 is a prime.

It is a super-2 number, since 2×636032321113381² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636032321113681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318016160556690 + 318016160556691.

It is an arithmetic number, because the mean of its divisors is an integer number (318016160556691).

Almost surely, 2^{636032321113381} is an apocalyptic number.

It is an amenable number.

636032321113381 is a deficient number, since it is larger than the sum of its proper divisors (1).

636032321113381 is an equidigital number, since it uses as much as digits as its factorization.

636032321113381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 636032321113381 in words is "six hundred thirty-six trillion, thirty-two billion, three hundred twenty-one million, one hundred thirteen thousand, three hundred eighty-one".