27972615127 has 2 divisors, whose sum is σ = 27972615128. Its totient is φ = 27972615126.

The previous prime is 27972615067. The next prime is 27972615149. The reversal of 27972615127 is 72151627972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27972615127 - 2¹¹ = 27972613079 is a prime.

It is a super-2 number, since 2×27972615127² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27972615197) 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 as a sum of consecutive naturals, namely, 13986307563 + 13986307564.

It is an arithmetic number, because the mean of its divisors is an integer number (13986307564).

Almost surely, 2^27972615127 is an apocalyptic number.

27972615127 is a deficient number, since it is larger than the sum of its proper divisors (1).

27972615127 is an equidigital number, since it uses as much as digits as its factorization.

27972615127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 49.

It can be divided in two parts, 2797 and 2615127, that added together give a square (2617924 = 1618²).

The spelling of 27972615127 in words is "twenty-seven billion, nine hundred seventy-two million, six hundred fifteen thousand, one hundred twenty-seven".