26564130216 has 96 divisors (see below), whose sum is σ = 77943116160. Its totient is φ = 8124587136.

The previous prime is 26564130157. The next prime is 26564130221. The reversal of 26564130216 is 61203146562.

26564130216 is a `hidden beast` number, since 2 + 6 + 5 + 641 + 3 + 0 + 2 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71341 + ... + 241283.

It is an arithmetic number, because the mean of its divisors is an integer number (811907460).

Almost surely, 2^26564130216 is an apocalyptic number.

26564130216 is a gapful number since it is divisible by the number (26) 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 26564130216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38971558080).

26564130216 is an abundant number, since it is smaller than the sum of its proper divisors (51378985944).

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

26564130216 is a wasteful number, since it uses less digits than its factorization.

26564130216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170135 (or 170128 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 26564130216 its reverse (61203146562), we get a palindrome (87767276778).

The spelling of 26564130216 in words is "twenty-six billion, five hundred sixty-four million, one hundred thirty thousand, two hundred sixteen".