26982272213645 has 54 divisors (see below), whose sum is σ = 37831599212958. Its totient is φ = 18420674899200.

The previous prime is 26982272213623. The next prime is 26982272213647. The reversal of 26982272213645 is 54631227228962.

It can be written as a sum of positive squares in 9 ways, for example, as 1165436838916 + 25816835374729 = 1079554^2 + 5081027^2 .

It is not a de Polignac number, because 26982272213645 - 2¹⁸ = 26982271951501 is a prime.

It is a super-3 number, since 3×26982272213645³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26982272213647) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 22846969955 + ... + 22846971135.

Almost surely, 2^{26982272213645} is an apocalyptic number.

It is an amenable number.

26982272213645 is a deficient number, since it is larger than the sum of its proper divisors (10849326999313).

26982272213645 is an frugal number, since it uses more digits than its factorization.

26982272213645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943 (or 1474 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 59.

The spelling of 26982272213645 in words is "twenty-six trillion, nine hundred eighty-two billion, two hundred seventy-two million, two hundred thirteen thousand, six hundred forty-five".