27317097561 has 16 divisors (see below), whose sum is σ = 39243355200. Its totient is φ = 16802462400.

The previous prime is 27317097559. The next prime is 27317097583. The reversal of 27317097561 is 16579071372.

It is not a de Polignac number, because 27317097561 - 2¹ = 27317097559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27317097561.

It is not an unprimeable number, because it can be changed into a prime (27317097541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84990 + ... + 248711.

It is an arithmetic number, because the mean of its divisors is an integer number (2452709700).

Almost surely, 2^27317097561 is an apocalyptic number.

It is an amenable number.

27317097561 is a deficient number, since it is larger than the sum of its proper divisors (11926257639).

27317097561 is a wasteful number, since it uses less digits than its factorization.

27317097561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335816.

The product of its (nonzero) digits is 555660, while the sum is 48.

The spelling of 27317097561 in words is "twenty-seven billion, three hundred seventeen million, ninety-seven thousand, five hundred sixty-one".