27313331565 has 32 divisors (see below), whose sum is σ = 49109195520. Its totient is φ = 12861927936.

The previous prime is 27313331543. The next prime is 27313331593. The reversal of 27313331565 is 56513331372.

It is not a de Polignac number, because 27313331565 - 2⁶ = 27313331501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3040480 + ... + 3049449.

It is an arithmetic number, because the mean of its divisors is an integer number (1534662360).

Almost surely, 2^27313331565 is an apocalyptic number.

It is an amenable number.

27313331565 is a deficient number, since it is larger than the sum of its proper divisors (21795863955).

27313331565 is a wasteful number, since it uses less digits than its factorization.

27313331565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6089973.

The product of its digits is 170100, while the sum is 39.

The spelling of 27313331565 in words is "twenty-seven billion, three hundred thirteen million, three hundred thirty-one thousand, five hundred sixty-five".