27827855445 has 32 divisors (see below), whose sum is σ = 47960220672. Its totient is φ = 13696814592.

The previous prime is 27827855423. The next prime is 27827855477. The reversal of 27827855445 is 54455872872.

It is not a de Polignac number, because 27827855445 - 2⁶ = 27827855381 is a prime.

It is a super-2 number, since 2×27827855445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1041169 + ... + 1067561.

It is an arithmetic number, because the mean of its divisors is an integer number (1498756896).

Almost surely, 2^27827855445 is an apocalyptic number.

It is an amenable number.

27827855445 is a deficient number, since it is larger than the sum of its proper divisors (20132365227).

27827855445 is a wasteful number, since it uses less digits than its factorization.

27827855445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31821.

The product of its digits is 25088000, while the sum is 57.

The spelling of 27827855445 in words is "twenty-seven billion, eight hundred twenty-seven million, eight hundred fifty-five thousand, four hundred forty-five".