7638240226244 has 6 divisors (see below), whose sum is σ = 13366920395934. Its totient is φ = 3819120113120.

The previous prime is 7638240226237. The next prime is 7638240226273. The reversal of 7638240226244 is 4426220428367.

It can be written as a sum of positive squares in only one way, i.e., 7624943368900 + 13296857344 = 2761330^2 + 115312^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7638240226192 and 7638240226201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 954780028277 + ... + 954780028284.

It is an arithmetic number, because the mean of its divisors is an integer number (2227820065989).

Almost surely, 2^{7638240226244} is an apocalyptic number.

It is an amenable number.

7638240226244 is a deficient number, since it is larger than the sum of its proper divisors (5728680169690).

7638240226244 is a wasteful number, since it uses less digits than its factorization.

7638240226244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909560056565 (or 1909560056563 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 50.

The spelling of 7638240226244 in words is "seven trillion, six hundred thirty-eight billion, two hundred forty million, two hundred twenty-six thousand, two hundred forty-four".