27774453357 has 24 divisors (see below), whose sum is σ = 45890619840. Its totient is φ = 15857017920.

The previous prime is 27774453353. The next prime is 27774453397. The reversal of 27774453357 is 75335447772.

27774453357 is a `hidden beast` number, since 2 + 77 + 74 + 453 + 3 + 57 = 666.

It is not a de Polignac number, because 27774453357 - 2² = 27774453353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27774453353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124119 + ... + 266372.

It is an arithmetic number, because the mean of its divisors is an integer number (1912109160).

Almost surely, 2^27774453357 is an apocalyptic number.

It is an amenable number.

27774453357 is a deficient number, since it is larger than the sum of its proper divisors (18116166483).

27774453357 is a wasteful number, since it uses less digits than its factorization.

27774453357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391633 (or 391630 counting only the distinct ones).

The product of its digits is 17287200, while the sum is 54.

The spelling of 27774453357 in words is "twenty-seven billion, seven hundred seventy-four million, four hundred fifty-three thousand, three hundred fifty-seven".