27665001400015 has 16 divisors (see below), whose sum is σ = 38562549963840. Its totient is φ = 18659298366720.

The previous prime is 27665001399953. The next prime is 27665001400033. The reversal of 27665001400015 is 51000410056672.

It is a happy number.

It is not a de Polignac number, because 27665001400015 - 2⁷ = 27665001399887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6478920910 + ... + 6478925179.

It is an arithmetic number, because the mean of its divisors is an integer number (2410159372740).

Almost surely, 2^{27665001400015} is an apocalyptic number.

27665001400015 is a deficient number, since it is larger than the sum of its proper divisors (10897548563825).

27665001400015 is a wasteful number, since it uses less digits than its factorization.

27665001400015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12957846162.

The product of its (nonzero) digits is 50400, while the sum is 37.

Adding to 27665001400015 its reverse (51000410056672), we get a palindrome (78665411456687).

The spelling of 27665001400015 in words is "twenty-seven trillion, six hundred sixty-five billion, one million, four hundred thousand, fifteen".