26744444540 has 96 divisors (see below), whose sum is σ = 65057126400. Its totient is φ = 9127224320.

The previous prime is 26744444539. The next prime is 26744444549. The reversal of 26744444540 is 4544444762.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 26744444491 and 26744444500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26744444549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1332701 + ... + 1352619.

It is an arithmetic number, because the mean of its divisors is an integer number (677678400).

Almost surely, 2^26744444540 is an apocalyptic number.

26744444540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26744444540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32528563200).

26744444540 is an abundant number, since it is smaller than the sum of its proper divisors (38312681860).

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

26744444540 is a wasteful number, since it uses less digits than its factorization.

26744444540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20315 (or 20313 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 44.

The spelling of 26744444540 in words is "twenty-six billion, seven hundred forty-four million, four hundred forty-four thousand, five hundred forty".