27854849515 has 4 divisors (see below), whose sum is σ = 33425819424. Its totient is φ = 22283879608.

The previous prime is 27854849467. The next prime is 27854849521. The reversal of 27854849515 is 51594845872.

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 27854849515 - 2⁷ = 27854849387 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 27854849515.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2785484947 + ... + 2785484956.

It is an arithmetic number, because the mean of its divisors is an integer number (8356454856).

Almost surely, 2^27854849515 is an apocalyptic number.

27854849515 is a deficient number, since it is larger than the sum of its proper divisors (5570969909).

27854849515 is an equidigital number, since it uses as much as digits as its factorization.

27854849515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570969908.

The product of its digits is 16128000, while the sum is 58.

The spelling of 27854849515 in words is "twenty-seven billion, eight hundred fifty-four million, eight hundred forty-nine thousand, five hundred fifteen".