26700212617 has 4 divisors (see below), whose sum is σ = 28754075140. Its totient is φ = 24646350096.

The previous prime is 26700212573. The next prime is 26700212629. The reversal of 26700212617 is 71621200762.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9186072336 + 17514140281 = 95844^2 + 132341^2 .

It is a cyclic number.

It is not a de Polignac number, because 26700212617 - 2¹⁹ = 26699688329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26700212717) 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, 1026931242 + ... + 1026931267.

It is an arithmetic number, because the mean of its divisors is an integer number (7188518785).

Almost surely, 2^26700212617 is an apocalyptic number.

It is an amenable number.

26700212617 is a deficient number, since it is larger than the sum of its proper divisors (2053862523).

26700212617 is a wasteful number, since it uses less digits than its factorization.

26700212617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053862522.

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 26700212617 in words is "twenty-six billion, seven hundred million, two hundred twelve thousand, six hundred seventeen".