26891535048 has 256 divisors, whose sum is σ = 84882124800. Its totient is φ = 6929556480.

The previous prime is 26891535043. The next prime is 26891535061. The reversal of 26891535048 is 84053519862.

It is not an unprimeable number, because it can be changed into a prime (26891535043) 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, 4815618 + ... + 4821198.

It is an arithmetic number, because the mean of its divisors is an integer number (331570800).

Almost surely, 2^26891535048 is an apocalyptic number.

26891535048 is a gapful number since it is divisible by the number (28) 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 26891535048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42441062400).

26891535048 is an abundant number, since it is smaller than the sum of its proper divisors (57990589752).

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

26891535048 is a wasteful number, since it uses less digits than its factorization.

26891535048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5692 (or 5688 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 26891535048 in words is "twenty-six billion, eight hundred ninety-one million, five hundred thirty-five thousand, forty-eight".