636324070477 has 2 divisors, whose sum is σ = 636324070478. Its totient is φ = 636324070476.

The previous prime is 636324070453. The next prime is 636324070513. The reversal of 636324070477 is 774070423636.

636324070477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424516099401 + 211807971076 = 651549^2 + 460226^2 .

It is a cyclic number.

It is not a de Polignac number, because 636324070477 - 2¹⁵ = 636324037709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 636324070477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636324040477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318162035238 + 318162035239.

It is an arithmetic number, because the mean of its divisors is an integer number (318162035239).

Almost surely, 2^636324070477 is an apocalyptic number.

It is an amenable number.

636324070477 is a deficient number, since it is larger than the sum of its proper divisors (1).

636324070477 is an equidigital number, since it uses as much as digits as its factorization.

636324070477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 49.

The spelling of 636324070477 in words is "six hundred thirty-six billion, three hundred twenty-four million, seventy thousand, four hundred seventy-seven".