26642637444 has 48 divisors (see below), whose sum is σ = 67694558400. Its totient is φ = 8123342976.

The previous prime is 26642637433. The next prime is 26642637467. The reversal of 26642637444 is 44473624662.

It is a junction number, because it is equal to n+sod(n) for n = 26642637393 and 26642637402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2008107 + ... + 2021330.

It is an arithmetic number, because the mean of its divisors is an integer number (1410303300).

Almost surely, 2^26642637444 is an apocalyptic number.

It is an amenable number.

26642637444 is an abundant number, since it is smaller than the sum of its proper divisors (41051920956).

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

26642637444 is a wasteful number, since it uses less digits than its factorization.

26642637444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029492 (or 4029490 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 48.

The spelling of 26642637444 in words is "twenty-six billion, six hundred forty-two million, six hundred thirty-seven thousand, four hundred forty-four".