27145172107 has 4 divisors (see below), whose sum is σ = 27146174616. Its totient is φ = 27144169600.

The previous prime is 27145172101. The next prime is 27145172113. The reversal of 27145172107 is 70127154172.

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

It is an interprime number because it is at equal distance from previous prime (27145172101) and next prime (27145172113).

It is a cyclic number.

It is not a de Polignac number, because 27145172107 - 2¹⁹ = 27144647819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27145172101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459478 + ... + 515179.

It is an arithmetic number, because the mean of its divisors is an integer number (6786543654).

Almost surely, 2^27145172107 is an apocalyptic number.

27145172107 is a deficient number, since it is larger than the sum of its proper divisors (1002509).

27145172107 is an equidigital number, since it uses as much as digits as its factorization.

27145172107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002508.

The product of its (nonzero) digits is 27440, while the sum is 37.

The spelling of 27145172107 in words is "twenty-seven billion, one hundred forty-five million, one hundred seventy-two thousand, one hundred seven".