27940039819 has 2 divisors, whose sum is σ = 27940039820. Its totient is φ = 27940039818.

The previous prime is 27940039789. The next prime is 27940039849. The reversal of 27940039819 is 91893004972.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (27940039789) and next prime (27940039849).

It is a cyclic number.

It is not a de Polignac number, because 27940039819 - 2⁷ = 27940039691 is a prime.

It is a super-2 number, since 2×27940039819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27940039849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13970019909 + 13970019910.

It is an arithmetic number, because the mean of its divisors is an integer number (13970019910).

Almost surely, 2^27940039819 is an apocalyptic number.

27940039819 is a deficient number, since it is larger than the sum of its proper divisors (1).

27940039819 is an equidigital number, since it uses as much as digits as its factorization.

27940039819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 27940039819 in words is "twenty-seven billion, nine hundred forty million, thirty-nine thousand, eight hundred nineteen".