27857739048557 has 8 divisors (see below), whose sum is σ = 30405463536000. Its totient is φ = 25312548353760.

The previous prime is 27857739048493. The next prime is 27857739048577. The reversal of 27857739048557 is 75584093775872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27857739048557 - 2⁶ = 27857739048493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27857739048577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633425168 + ... + 633469145.

It is an arithmetic number, because the mean of its divisors is an integer number (3800682942000).

Almost surely, 2^{27857739048557} is an apocalyptic number.

It is an amenable number.

27857739048557 is a deficient number, since it is larger than the sum of its proper divisors (2547724487443).

27857739048557 is a wasteful number, since it uses less digits than its factorization.

27857739048557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266896323.

The product of its (nonzero) digits is 4148928000, while the sum is 77.

The spelling of 27857739048557 in words is "twenty-seven trillion, eight hundred fifty-seven billion, seven hundred thirty-nine million, forty-eight thousand, five hundred fifty-seven".