26111211520 has 96 divisors (see below), whose sum is σ = 63030895200. Its totient is φ = 10381262848.

The previous prime is 26111211463. The next prime is 26111211583. The reversal of 26111211520 is 2511211162.

It is a junction number, because it is equal to n+sod(n) for n = 26111211491 and 26111211500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702446 + ... + 1717714.

It is an arithmetic number, because the mean of its divisors is an integer number (656571825).

Almost surely, 2^26111211520 is an apocalyptic number.

26111211520 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 26111211520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31515447600).

26111211520 is an abundant number, since it is smaller than the sum of its proper divisors (36919683680).

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

26111211520 is a wasteful number, since it uses less digits than its factorization.

26111211520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15463 (or 15443 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 26111211520 its reverse (2511211162), we get a palindrome (28622422682).

The spelling of 26111211520 in words is "twenty-six billion, one hundred eleven million, two hundred eleven thousand, five hundred twenty".