26564655451 has 4 divisors (see below), whose sum is σ = 26690554504. Its totient is φ = 26438756400.

The previous prime is 26564655433. The next prime is 26564655473. The reversal of 26564655451 is 15455646562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15455646562 = 2 ⋅7727823281.

It is a cyclic number.

It is not a de Polignac number, because 26564655451 - 2⁷ = 26564655323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26564655395 and 26564655404.

It is not an unprimeable number, because it can be changed into a prime (26564655401) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 62949210 + ... + 62949631.

It is an arithmetic number, because the mean of its divisors is an integer number (6672638626).

Almost surely, 2^26564655451 is an apocalyptic number.

26564655451 is a deficient number, since it is larger than the sum of its proper divisors (125899053).

26564655451 is a wasteful number, since it uses less digits than its factorization.

26564655451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125899052.

The product of its digits is 4320000, while the sum is 49.

The spelling of 26564655451 in words is "twenty-six billion, five hundred sixty-four million, six hundred fifty-five thousand, four hundred fifty-one".