3638226287277 has 28 divisors (see below), whose sum is σ = 5455942033564. Its totient is φ = 2424995988480.

The previous prime is 3638226287249. The next prime is 3638226287281. The reversal of 3638226287277 is 7727826228363.

3638226287277 is a `hidden beast` number, since 3 + 6 + 3 + 82 + 2 + 6 + 287 + 277 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1650143207241 + 1988083080036 = 1284579^2 + 1409994^2 .

It is not a de Polignac number, because 3638226287277 - 2⁷ = 3638226287149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638226287777) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3140127 + ... + 4139667.

Almost surely, 2^{3638226287277} is an apocalyptic number.

It is an amenable number.

3638226287277 is a deficient number, since it is larger than the sum of its proper divisors (1817715746287).

3638226287277 is an frugal number, since it uses more digits than its factorization.

3638226287277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004552 (or 1004537 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 63.

The spelling of 3638226287277 in words is "three trillion, six hundred thirty-eight billion, two hundred twenty-six million, two hundred eighty-seven thousand, two hundred seventy-seven".