27199974049 has 2 divisors, whose sum is σ = 27199974050. Its totient is φ = 27199974048.

The previous prime is 27199974029. The next prime is 27199974059. The reversal of 27199974049 is 94047999172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22656270400 + 4543703649 = 150520^2 + 67407^2 .

It is a cyclic number.

It is not a de Polignac number, because 27199974049 - 2⁵ = 27199974017 is a prime.

It is not a weakly prime, because it can be changed into another prime (27199974019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13599987024 + 13599987025.

It is an arithmetic number, because the mean of its divisors is an integer number (13599987025).

Almost surely, 2^27199974049 is an apocalyptic number.

It is an amenable number.

27199974049 is a deficient number, since it is larger than the sum of its proper divisors (1).

27199974049 is an equidigital number, since it uses as much as digits as its factorization.

27199974049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10287648, while the sum is 61.

The spelling of 27199974049 in words is "twenty-seven billion, one hundred ninety-nine million, nine hundred seventy-four thousand, forty-nine".