26511102420 has 144 divisors (see below), whose sum is σ = 85887654720. Its totient is φ = 6088642560.

The previous prime is 26511102419. The next prime is 26511102433. The reversal of 26511102420 is 2420111562.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41844 + ... + 234036.

Almost surely, 2^26511102420 is an apocalyptic number.

26511102420 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 26511102420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42943827360).

26511102420 is an abundant number, since it is smaller than the sum of its proper divisors (59376552300).

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

26511102420 is a wasteful number, since it uses less digits than its factorization.

26511102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192246 (or 192233 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 26511102420 its reverse (2420111562), we get a palindrome (28931213982).

The spelling of 26511102420 in words is "twenty-six billion, five hundred eleven million, one hundred two thousand, four hundred twenty".