27434501065 has 16 divisors (see below), whose sum is σ = 33150574080. Its totient is φ = 21794984640.

The previous prime is 27434501047. The next prime is 27434501089. The reversal of 27434501065 is 56010543472.

It is not a de Polignac number, because 27434501065 - 2⁹ = 27434500553 is a prime.

It is a super-2 number, since 2×27434501065² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459396 + ... + 1478074.

It is an arithmetic number, because the mean of its divisors is an integer number (2071910880).

Almost surely, 2^27434501065 is an apocalyptic number.

It is an amenable number.

27434501065 is a deficient number, since it is larger than the sum of its proper divisors (5716073015).

27434501065 is a wasteful number, since it uses less digits than its factorization.

27434501065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20712.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 27434501065 in words is "twenty-seven billion, four hundred thirty-four million, five hundred one thousand, sixty-five".