27068489731 has 4 divisors (see below), whose sum is σ = 27069964632. Its totient is φ = 27067014832.

The previous prime is 27068489719. The next prime is 27068489761. The reversal of 27068489731 is 13798486072.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27068489731 - 2¹⁵ = 27068456963 is a prime.

It is a super-2 number, since 2×27068489731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27068489761) 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 3 ways as a sum of consecutive naturals, for example, 709570 + ... + 746743.

It is an arithmetic number, because the mean of its divisors is an integer number (6767491158).

Almost surely, 2^27068489731 is an apocalyptic number.

27068489731 is a deficient number, since it is larger than the sum of its proper divisors (1474901).

27068489731 is a wasteful number, since it uses less digits than its factorization.

27068489731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474900.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 27068489731 in words is "twenty-seven billion, sixty-eight million, four hundred eighty-nine thousand, seven hundred thirty-one".