27042541949 has 2 divisors, whose sum is σ = 27042541950. Its totient is φ = 27042541948.

The previous prime is 27042541919. The next prime is 27042541969. The reversal of 27042541949 is 94914524072.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17552275225 + 9490266724 = 132485^2 + 97418^2 .

It is a cyclic number.

It is not a de Polignac number, because 27042541949 - 2¹² = 27042537853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27042541919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13521270974 + 13521270975.

It is an arithmetic number, because the mean of its divisors is an integer number (13521270975).

Almost surely, 2^27042541949 is an apocalyptic number.

It is an amenable number.

27042541949 is a deficient number, since it is larger than the sum of its proper divisors (1).

27042541949 is an equidigital number, since it uses as much as digits as its factorization.

27042541949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 27042541949 in words is "twenty-seven billion, forty-two million, five hundred forty-one thousand, nine hundred forty-nine".