27042541919 has 2 divisors, whose sum is σ = 27042541920. Its totient is φ = 27042541918.

The previous prime is 27042541871. The next prime is 27042541949. The reversal of 27042541919 is 91914524072.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27042541919 is a prime.

It is a super-2 number, since 2×27042541919² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27042541919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27042541949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13521270959 + 13521270960.

It is an arithmetic number, because the mean of its divisors is an integer number (13521270960).

Almost surely, 2^27042541919 is an apocalyptic number.

27042541919 is a deficient number, since it is larger than the sum of its proper divisors (1).

27042541919 is an equidigital number, since it uses as much as digits as its factorization.

27042541919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 27042541919 in words is "twenty-seven billion, forty-two million, five hundred forty-one thousand, nine hundred nineteen".