27779305836 has 12 divisors (see below), whose sum is σ = 64818380312. Its totient is φ = 9259768608.

The previous prime is 27779305823. The next prime is 27779305837. The reversal of 27779305836 is 63850397772.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (27779305837) 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, 1157471065 + ... + 1157471088.

Almost surely, 2^27779305836 is an apocalyptic number.

It is an amenable number.

27779305836 is an abundant number, since it is smaller than the sum of its proper divisors (37039074476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27779305836 is a wasteful number, since it uses less digits than its factorization.

27779305836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314942160 (or 2314942158 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 57.

The spelling of 27779305836 in words is "twenty-seven billion, seven hundred seventy-nine million, three hundred five thousand, eight hundred thirty-six".