27315399061 has 4 divisors (see below), whose sum is σ = 27332462124. Its totient is φ = 27298336000.

The previous prime is 27315399037. The next prime is 27315399071. The reversal of 27315399061 is 16099351372.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22221864900 + 5093534161 = 149070^2 + 71369^2 .

It is a cyclic number.

It is not a de Polignac number, because 27315399061 - 2⁵ = 27315399029 is a prime.

It is a super-2 number, since 2×27315399061² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27315399071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8529130 + ... + 8532331.

It is an arithmetic number, because the mean of its divisors is an integer number (6833115531).

Almost surely, 2^27315399061 is an apocalyptic number.

It is an amenable number.

27315399061 is a deficient number, since it is larger than the sum of its proper divisors (17063063).

27315399061 is a wasteful number, since it uses less digits than its factorization.

27315399061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17063062.

The product of its (nonzero) digits is 306180, while the sum is 46.

The spelling of 27315399061 in words is "twenty-seven billion, three hundred fifteen million, three hundred ninety-nine thousand, sixty-one".