27872638751 has 2 divisors, whose sum is σ = 27872638752. Its totient is φ = 27872638750.

The previous prime is 27872638721. The next prime is 27872638789. The reversal of 27872638751 is 15783627872.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27872638751 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27872638721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13936319375 + 13936319376.

It is an arithmetic number, because the mean of its divisors is an integer number (13936319376).

Almost surely, 2^27872638751 is an apocalyptic number.

27872638751 is a deficient number, since it is larger than the sum of its proper divisors (1).

27872638751 is an equidigital number, since it uses as much as digits as its factorization.

27872638751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7902720, while the sum is 56.

The spelling of 27872638751 in words is "twenty-seven billion, eight hundred seventy-two million, six hundred thirty-eight thousand, seven hundred fifty-one".