26564400052 has 6 divisors (see below), whose sum is σ = 46487700098. Its totient is φ = 13282200024.

The previous prime is 26564400041. The next prime is 26564400119. The reversal of 26564400052 is 25000446562.

It can be written as a sum of positive squares in only one way, i.e., 23190416656 + 3373983396 = 152284^2 + 58086^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26564399990 and 26564400017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3320550003 + ... + 3320550010.

Almost surely, 2^26564400052 is an apocalyptic number.

It is an amenable number.

26564400052 is a deficient number, since it is larger than the sum of its proper divisors (19923300046).

26564400052 is a wasteful number, since it uses less digits than its factorization.

26564400052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6641100017 (or 6641100015 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 26564400052 in words is "twenty-six billion, five hundred sixty-four million, four hundred thousand, fifty-two".