27851012699 has 4 divisors (see below), whose sum is σ = 27851915280. Its totient is φ = 27850110120.

The previous prime is 27851012669. The next prime is 27851012723. The reversal of 27851012699 is 99621015872.

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 27851012699 - 2⁸ = 27851012443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27851012659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403304 + ... + 467285.

It is an arithmetic number, because the mean of its divisors is an integer number (6962978820).

Almost surely, 2^27851012699 is an apocalyptic number.

27851012699 is a deficient number, since it is larger than the sum of its proper divisors (902581).

27851012699 is an equidigital number, since it uses as much as digits as its factorization.

27851012699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902580.

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 27851012699 in words is "twenty-seven billion, eight hundred fifty-one million, twelve thousand, six hundred ninety-nine".