2638425087226 has 4 divisors (see below), whose sum is σ = 3957637630842. Its totient is φ = 1319212543612.

The previous prime is 2638425087169. The next prime is 2638425087227. The reversal of 2638425087226 is 6227805248362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1596798686025 + 1041626401201 = 1263645^2 + 1020601^2 .

It is a super-2 number, since 2×2638425087226² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2638425087227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659606271805 + ... + 659606271808.

Almost surely, 2^{2638425087226} is an apocalyptic number.

2638425087226 is a deficient number, since it is larger than the sum of its proper divisors (1319212543616).

2638425087226 is a wasteful number, since it uses less digits than its factorization.

2638425087226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319212543615.

The product of its (nonzero) digits is 15482880, while the sum is 55.

The spelling of 2638425087226 in words is "two trillion, six hundred thirty-eight billion, four hundred twenty-five million, eighty-seven thousand, two hundred twenty-six".