27538145457 has 16 divisors (see below), whose sum is σ = 37276833792. Its totient is φ = 18081221760.

The previous prime is 27538145443. The next prime is 27538145491. The reversal of 27538145457 is 75454183572.

It is not a de Polignac number, because 27538145457 - 2²⁸ = 27269710001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27538145497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211594 + ... + 315987.

It is an arithmetic number, because the mean of its divisors is an integer number (2329802112).

Almost surely, 2^27538145457 is an apocalyptic number.

It is an amenable number.

27538145457 is a deficient number, since it is larger than the sum of its proper divisors (9738688335).

27538145457 is a wasteful number, since it uses less digits than its factorization.

27538145457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527848.

The product of its digits is 4704000, while the sum is 51.

The spelling of 27538145457 in words is "twenty-seven billion, five hundred thirty-eight million, one hundred forty-five thousand, four hundred fifty-seven".