27142021117 has 4 divisors (see below), whose sum is σ = 27719510976. Its totient is φ = 26564531260.

The previous prime is 27142021097. The next prime is 27142021141. The reversal of 27142021117 is 71112024172.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27142021117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27142021717) 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, 288744859 + ... + 288744952.

It is an arithmetic number, because the mean of its divisors is an integer number (6929877744).

Almost surely, 2^27142021117 is an apocalyptic number.

It is an amenable number.

27142021117 is a deficient number, since it is larger than the sum of its proper divisors (577489859).

27142021117 is an equidigital number, since it uses as much as digits as its factorization.

27142021117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577489858.

The product of its (nonzero) digits is 1568, while the sum is 28.

Adding to 27142021117 its reverse (71112024172), we get a palindrome (98254045289).

The spelling of 27142021117 in words is "twenty-seven billion, one hundred forty-two million, twenty-one thousand, one hundred seventeen".