27729315165 has 16 divisors (see below), whose sum is σ = 44592121728. Its totient is φ = 14713895616.

The previous prime is 27729315161. The next prime is 27729315167. The reversal of 27729315165 is 56151392772.

It is not a de Polignac number, because 27729315165 - 2² = 27729315161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27729315161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4688977 + ... + 4694886.

It is an arithmetic number, because the mean of its divisors is an integer number (2787007608).

Almost surely, 2^27729315165 is an apocalyptic number.

It is an amenable number.

27729315165 is a deficient number, since it is larger than the sum of its proper divisors (16862806563).

27729315165 is a wasteful number, since it uses less digits than its factorization.

27729315165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9384068.

The product of its digits is 793800, while the sum is 48.

The spelling of 27729315165 in words is "twenty-seven billion, seven hundred twenty-nine million, three hundred fifteen thousand, one hundred sixty-five".