27800305829 has 32 divisors (see below), whose sum is σ = 31089423360. Its totient is φ = 24746342400.

The previous prime is 27800305801. The next prime is 27800305837. The reversal of 27800305829 is 92850300872.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27800305829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27800305829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27800325829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13358069 + ... + 13360149.

It is an arithmetic number, because the mean of its divisors is an integer number (971544480).

Almost surely, 2^27800305829 is an apocalyptic number.

It is an amenable number.

27800305829 is a deficient number, since it is larger than the sum of its proper divisors (3289117531).

27800305829 is a wasteful number, since it uses less digits than its factorization.

27800305829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 27800305829 in words is "twenty-seven billion, eight hundred million, three hundred five thousand, eight hundred twenty-nine".