27699271745 has 16 divisors (see below), whose sum is σ = 34322683392. Its totient is φ = 21437518080.

The previous prime is 27699271741. The next prime is 27699271867. The reversal of 27699271745 is 54717299672.

It is not a de Polignac number, because 27699271745 - 2² = 27699271741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27699271741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468569 + ... + 524361.

It is an arithmetic number, because the mean of its divisors is an integer number (2145167712).

Almost surely, 2^27699271745 is an apocalyptic number.

It is an amenable number.

27699271745 is a deficient number, since it is larger than the sum of its proper divisors (6623411647).

27699271745 is a wasteful number, since it uses less digits than its factorization.

27699271745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59032.

The product of its digits is 13335840, while the sum is 59.

The spelling of 27699271745 in words is "twenty-seven billion, six hundred ninety-nine million, two hundred seventy-one thousand, seven hundred forty-five".