27057491413 has 4 divisors (see below), whose sum is σ = 27501056908. Its totient is φ = 26613925920.

The previous prime is 27057491407. The next prime is 27057491437. The reversal of 27057491413 is 31419475072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7323422929 + 19734068484 = 85577^2 + 140478^2 .

It is a cyclic number.

It is not a de Polignac number, because 27057491413 - 2⁵ = 27057491381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27057491413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27057491473) 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, 221782656 + ... + 221782777.

It is an arithmetic number, because the mean of its divisors is an integer number (6875264227).

Almost surely, 2^27057491413 is an apocalyptic number.

It is an amenable number.

27057491413 is a deficient number, since it is larger than the sum of its proper divisors (443565495).

27057491413 is an equidigital number, since it uses as much as digits as its factorization.

27057491413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443565494.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 27057491413 in words is "twenty-seven billion, fifty-seven million, four hundred ninety-one thousand, four hundred thirteen".