26408147256 has 128 divisors (see below), whose sum is σ = 74750860800. Its totient is φ = 8636544000.

The previous prime is 26408147239. The next prime is 26408147281. The reversal of 26408147256 is 65274180462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3231816 + ... + 3239976.

It is an arithmetic number, because the mean of its divisors is an integer number (583991100).

Almost surely, 2^26408147256 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 26408147256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37375430400).

26408147256 is an abundant number, since it is smaller than the sum of its proper divisors (48342713544).

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

26408147256 is a wasteful number, since it uses less digits than its factorization.

26408147256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8458 (or 8448 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 26408147256 in words is "twenty-six billion, four hundred eight million, one hundred forty-seven thousand, two hundred fifty-six".