27058381557 has 4 divisors (see below), whose sum is σ = 36077842080. Its totient is φ = 18038921036.

The previous prime is 27058381523. The next prime is 27058381573. The reversal of 27058381557 is 75518385072.

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 27058381557 - 2¹⁰ = 27058380533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27058381507) 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, 4509730257 + ... + 4509730262.

It is an arithmetic number, because the mean of its divisors is an integer number (9019460520).

Almost surely, 2^27058381557 is an apocalyptic number.

It is an amenable number.

27058381557 is a deficient number, since it is larger than the sum of its proper divisors (9019460523).

27058381557 is an equidigital number, since it uses as much as digits as its factorization.

27058381557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9019460522.

The product of its (nonzero) digits is 2352000, while the sum is 51.

The spelling of 27058381557 in words is "twenty-seven billion, fifty-eight million, three hundred eighty-one thousand, five hundred fifty-seven".