26172351444 has 24 divisors (see below), whose sum is σ = 61629087520. Its totient is φ = 8644078944.

The previous prime is 26172351421. The next prime is 26172351449. The reversal of 26172351444 is 44415327162.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26172351449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10003414 + ... + 10006029.

Almost surely, 2^26172351444 is an apocalyptic number.

It is an amenable number.

26172351444 is an abundant number, since it is smaller than the sum of its proper divisors (35456736076).

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

26172351444 is a wasteful number, since it uses less digits than its factorization.

26172351444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20009559 (or 20009557 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The spelling of 26172351444 in words is "twenty-six billion, one hundred seventy-two million, three hundred fifty-one thousand, four hundred forty-four".