27972069247 has 2 divisors, whose sum is σ = 27972069248. Its totient is φ = 27972069246.

The previous prime is 27972069221. The next prime is 27972069259. The reversal of 27972069247 is 74296027972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27972069247 - 2¹⁹ = 27971544959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27972369247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13986034623 + 13986034624.

It is an arithmetic number, because the mean of its divisors is an integer number (13986034624).

Almost surely, 2^27972069247 is an apocalyptic number.

27972069247 is a deficient number, since it is larger than the sum of its proper divisors (1).

27972069247 is an equidigital number, since it uses as much as digits as its factorization.

27972069247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 27972069247 in words is "twenty-seven billion, nine hundred seventy-two million, sixty-nine thousand, two hundred forty-seven".