27899630399 has 4 divisors (see below), whose sum is σ = 28019371536. Its totient is φ = 27779889264.

The previous prime is 27899630357. The next prime is 27899630401. The reversal of 27899630399 is 99303699872.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27899630399 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 (27899630999) 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 3 ways as a sum of consecutive naturals, for example, 59870219 + ... + 59870684.

It is an arithmetic number, because the mean of its divisors is an integer number (7004842884).

Almost surely, 2^27899630399 is an apocalyptic number.

27899630399 is a deficient number, since it is larger than the sum of its proper divisors (119741137).

27899630399 is a wasteful number, since it uses less digits than its factorization.

27899630399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119741136.

The product of its (nonzero) digits is 39680928, while the sum is 65.

The spelling of 27899630399 in words is "twenty-seven billion, eight hundred ninety-nine million, six hundred thirty thousand, three hundred ninety-nine".