27914452781 has 2 divisors, whose sum is σ = 27914452782. Its totient is φ = 27914452780.

The previous prime is 27914452763. The next prime is 27914452799. The reversal of 27914452781 is 18725441972.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (27914452763) and next prime (27914452799).

It can be written as a sum of positive squares in only one way, i.e., 26986275625 + 928177156 = 164275^2 + 30466^2 .

It is a cyclic number.

It is not a de Polignac number, because 27914452781 - 2²⁶ = 27847343917 is a prime.

It is a super-2 number, since 2×27914452781² (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 (27914452721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13957226390 + 13957226391.

It is an arithmetic number, because the mean of its divisors is an integer number (13957226391).

Almost surely, 2^27914452781 is an apocalyptic number.

It is an amenable number.

27914452781 is a deficient number, since it is larger than the sum of its proper divisors (1).

27914452781 is an equidigital number, since it uses as much as digits as its factorization.

27914452781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 50.

The spelling of 27914452781 in words is "twenty-seven billion, nine hundred fourteen million, four hundred fifty-two thousand, seven hundred eighty-one".