27426164617 has 16 divisors (see below), whose sum is σ = 29386054800. Its totient is φ = 25505187840.

The previous prime is 27426164603. The next prime is 27426164621. The reversal of 27426164617 is 71646162472.

It can be written as a sum of positive squares in 8 ways, for example, as 83557881 + 27342606736 = 9141^2 + 165356^2 .

It is a cyclic number.

It is not a de Polignac number, because 27426164617 - 2¹⁹ = 27425640329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27426164627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2519767 + ... + 2530627.

It is an arithmetic number, because the mean of its divisors is an integer number (1836628425).

Almost surely, 2^27426164617 is an apocalyptic number.

It is an amenable number.

27426164617 is a deficient number, since it is larger than the sum of its proper divisors (1959890183).

27426164617 is a wasteful number, since it uses less digits than its factorization.

27426164617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12636.

The product of its digits is 677376, while the sum is 46.

The spelling of 27426164617 in words is "twenty-seven billion, four hundred twenty-six million, one hundred sixty-four thousand, six hundred seventeen".