26215656822 has 12 divisors (see below), whose sum is σ = 56800589820. Its totient is φ = 8738552268.

The previous prime is 26215656799. The next prime is 26215656829. The reversal of 26215656822 is 22865651262.

It is a happy number.

26215656822 is a `hidden beast` number, since 2 + 6 + 2 + 1 + 565 + 6 + 82 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26215656829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 728212672 + ... + 728212707.

It is an arithmetic number, because the mean of its divisors is an integer number (4733382485).

Almost surely, 2^26215656822 is an apocalyptic number.

26215656822 is an abundant number, since it is smaller than the sum of its proper divisors (30584932998).

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

26215656822 is a wasteful number, since it uses less digits than its factorization.

26215656822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456425387 (or 1456425384 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 26215656822 in words is "twenty-six billion, two hundred fifteen million, six hundred fifty-six thousand, eight hundred twenty-two".