27458557445679 has 4 divisors (see below), whose sum is σ = 36611409927576. Its totient is φ = 18305704963784.

The previous prime is 27458557445647. The next prime is 27458557445681. The reversal of 27458557445679 is 97654475585472.

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 27458557445679 - 2⁵ = 27458557445647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27458550445679) 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, 4576426240944 + ... + 4576426240949.

It is an arithmetic number, because the mean of its divisors is an integer number (9152852481894).

Almost surely, 2^{27458557445679} is an apocalyptic number.

27458557445679 is a deficient number, since it is larger than the sum of its proper divisors (9152852481897).

27458557445679 is an equidigital number, since it uses as much as digits as its factorization.

27458557445679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9152852481896.

The product of its digits is 11854080000, while the sum is 78.

The spelling of 27458557445679 in words is "twenty-seven trillion, four hundred fifty-eight billion, five hundred fifty-seven million, four hundred forty-five thousand, six hundred seventy-nine".