26486439280 has 320 divisors, whose sum is σ = 79126364160. Its totient is φ = 8026324992.

The previous prime is 26486439253. The next prime is 26486439281. The reversal of 26486439280 is 8293468462.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26486439281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22971184 + ... + 22972336.

It is an arithmetic number, because the mean of its divisors is an integer number (247269888).

Almost surely, 2^26486439280 is an apocalyptic number.

26486439280 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 26486439280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39563182080).

26486439280 is an abundant number, since it is smaller than the sum of its proper divisors (52639924880).

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

26486439280 is a wasteful number, since it uses less digits than its factorization.

26486439280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 26486439280 in words is "twenty-six billion, four hundred eighty-six million, four hundred thirty-nine thousand, two hundred eighty".