27728745005 has 32 divisors (see below), whose sum is σ = 36691226880. Its totient is φ = 19987430400.

The previous prime is 27728745001. The next prime is 27728745013. The reversal of 27728745005 is 50054782772.

It is not a de Polignac number, because 27728745005 - 2² = 27728745001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27728745001) 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, 7128101 + ... + 7131989.

It is an arithmetic number, because the mean of its divisors is an integer number (1146600840).

Almost surely, 2^27728745005 is an apocalyptic number.

It is an amenable number.

27728745005 is a deficient number, since it is larger than the sum of its proper divisors (8962481875).

27728745005 is a wasteful number, since it uses less digits than its factorization.

27728745005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6501.

The product of its (nonzero) digits is 1097600, while the sum is 47.

The spelling of 27728745005 in words is "twenty-seven billion, seven hundred twenty-eight million, seven hundred forty-five thousand, five".