27774785359 has 4 divisors (see below), whose sum is σ = 27798068016. Its totient is φ = 27751502704.

The previous prime is 27774785347. The next prime is 27774785369. The reversal of 27774785359 is 95358747772.

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

It is a cyclic number.

It is not a de Polignac number, because 27774785359 - 2¹³ = 27774777167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27774785359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27774785369) 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, 11639539 + ... + 11641924.

It is an arithmetic number, because the mean of its divisors is an integer number (6949517004).

Almost surely, 2^27774785359 is an apocalyptic number.

27774785359 is a deficient number, since it is larger than the sum of its proper divisors (23282657).

27774785359 is a wasteful number, since it uses less digits than its factorization.

27774785359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23282656.

The product of its digits is 103723200, while the sum is 64.

The spelling of 27774785359 in words is "twenty-seven billion, seven hundred seventy-four million, seven hundred eighty-five thousand, three hundred fifty-nine".