27774697513 has 4 divisors (see below), whose sum is σ = 27776103040. Its totient is φ = 27773291988.

The previous prime is 27774697501. The next prime is 27774697519. The reversal of 27774697513 is 31579647772.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27774697513 - 2¹⁷ = 27774566441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27774697519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672693 + ... + 712786.

It is an arithmetic number, because the mean of its divisors is an integer number (6944025760).

Almost surely, 2^27774697513 is an apocalyptic number.

It is an amenable number.

27774697513 is a deficient number, since it is larger than the sum of its proper divisors (1405527).

27774697513 is a wasteful number, since it uses less digits than its factorization.

27774697513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405526.

The product of its digits is 15558480, while the sum is 58.

The spelling of 27774697513 in words is "twenty-seven billion, seven hundred seventy-four million, six hundred ninety-seven thousand, five hundred thirteen".