26215269912 has 192 divisors, whose sum is σ = 83986156800. Its totient is φ = 7309336320.

The previous prime is 26215269911. The next prime is 26215269919. The reversal of 26215269912 is 21996251262.

26215269912 is a `hidden beast` number, since 2 + 6 + 21 + 526 + 99 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26215269911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 376987 + ... + 441077.

It is an arithmetic number, because the mean of its divisors is an integer number (437427900).

Almost surely, 2^26215269912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26215269912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41993078400).

26215269912 is an abundant number, since it is smaller than the sum of its proper divisors (57770886888).

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

26215269912 is a wasteful number, since it uses less digits than its factorization.

26215269912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64158 (or 64151 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The spelling of 26215269912 in words is "twenty-six billion, two hundred fifteen million, two hundred sixty-nine thousand, nine hundred twelve".