27767425669 has 4 divisors (see below), whose sum is σ = 27986066944. Its totient is φ = 27548784396.

The previous prime is 27767425667. The next prime is 27767425709. The reversal of 27767425669 is 96652476772.

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 27767425669 - 2¹ = 27767425667 is a prime.

It is a super-2 number, since 2×27767425669² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27767425661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109320447 + ... + 109320700.

It is an arithmetic number, because the mean of its divisors is an integer number (6996516736).

Almost surely, 2^27767425669 is an apocalyptic number.

It is an amenable number.

27767425669 is a deficient number, since it is larger than the sum of its proper divisors (218641275).

27767425669 is a wasteful number, since it uses less digits than its factorization.

27767425669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218641274.

The product of its digits is 53343360, while the sum is 61.

The spelling of 27767425669 in words is "twenty-seven billion, seven hundred sixty-seven million, four hundred twenty-five thousand, six hundred sixty-nine".