26405248956528 has 160 divisors (see below), whose sum is σ = 73800057993984. Its totient is φ = 8087247691776.

The previous prime is 26405248956491. The next prime is 26405248956529. The reversal of 26405248956528 is 82565984250462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26405248956529) 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, 123906675 + ... + 124119597.

Almost surely, 2^{26405248956528} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26405248956528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36900028996992).

26405248956528 is an abundant number, since it is smaller than the sum of its proper divisors (47394809037456).

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

26405248956528 is a wasteful number, since it uses less digits than its factorization.

26405248956528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213863 (or 213857 counting only the distinct ones).

The product of its (nonzero) digits is 331776000, while the sum is 66.

The spelling of 26405248956528 in words is "twenty-six trillion, four hundred five billion, two hundred forty-eight million, nine hundred fifty-six thousand, five hundred twenty-eight".