6444636131226 has 16 divisors (see below), whose sum is σ = 13237630972704. Its totient is φ = 2090152258704.

The previous prime is 6444636131203. The next prime is 6444636131231. The reversal of 6444636131226 is 6221316364446.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14514946020 + ... + 14514946463.

It is an arithmetic number, because the mean of its divisors is an integer number (827351935794).

Almost surely, 2^{6444636131226} is an apocalyptic number.

6444636131226 is an abundant number, since it is smaller than the sum of its proper divisors (6792994841478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6444636131226 is a wasteful number, since it uses less digits than its factorization.

6444636131226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29029892525.

The product of its digits is 2985984, while the sum is 48.

The spelling of 6444636131226 in words is "six trillion, four hundred forty-four billion, six hundred thirty-six million, one hundred thirty-one thousand, two hundred twenty-six".