27165440023645 has 32 divisors (see below), whose sum is σ = 40643800344576. Its totient is φ = 16933683739200.

The previous prime is 27165440023583. The next prime is 27165440023679. The reversal of 27165440023645 is 54632004456172.

It is not a de Polignac number, because 27165440023645 - 2¹⁷ = 27165439892573 is a prime.

It is a super-2 number, since 2×27165440023645² (a number of 28 digits) contains 22 as substring.

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, 9419730 + ... + 11960860.

It is an arithmetic number, because the mean of its divisors is an integer number (1270118760768).

Almost surely, 2^{27165440023645} is an apocalyptic number.

It is an amenable number.

27165440023645 is a deficient number, since it is larger than the sum of its proper divisors (13478360320931).

27165440023645 is a wasteful number, since it uses less digits than its factorization.

27165440023645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568921.

The product of its (nonzero) digits is 4838400, while the sum is 49.

The spelling of 27165440023645 in words is "twenty-seven trillion, one hundred sixty-five billion, four hundred forty million, twenty-three thousand, six hundred forty-five".