26638831883524 has 81 divisors (see below), whose sum is σ = 54569932922421. Its totient is φ = 11345323641120.

The previous prime is 26638831883513. The next prime is 26638831883561. The reversal of 26638831883524 is 42538813883662.

The square root of 26638831883524 is 5161282.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24232089212100 + 2406742671424 = 4922610^2 + 1551368^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 26638831883524.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12500623939 + ... + 12500626069.

Almost surely, 2^{26638831883524} is an apocalyptic number.

26638831883524 is the 5161282-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26638831883524

26638831883524 is an abundant number, since it is smaller than the sum of its proper divisors (27931101038897).

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

26638831883524 is an frugal number, since it uses more digits than its factorization.

26638831883524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626 (or 2313 counting only the distinct ones).

The product of its digits is 318504960, while the sum is 67.

The spelling of 26638831883524 in words is "twenty-six trillion, six hundred thirty-eight billion, eight hundred thirty-one million, eight hundred eighty-three thousand, five hundred twenty-four".