26899011240 has 128 divisors (see below), whose sum is σ = 83368811520. Its totient is φ = 6935961600.

The previous prime is 26899011187. The next prime is 26899011263. The reversal of 26899011240 is 4211099862.

It is a junction number, because it is equal to n+sod(n) for n = 26899011192 and 26899011201.

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, 6310710 + ... + 6314970.

It is an arithmetic number, because the mean of its divisors is an integer number (651318840).

Almost surely, 2^26899011240 is an apocalyptic number.

26899011240 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 26899011240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41684405760).

26899011240 is an abundant number, since it is smaller than the sum of its proper divisors (56469800280).

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

26899011240 is a wasteful number, since it uses less digits than its factorization.

26899011240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6003 (or 5999 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 26899011240 in words is "twenty-six billion, eight hundred ninety-nine million, eleven thousand, two hundred forty".