27354451009 has 2 divisors, whose sum is σ = 27354451010. Its totient is φ = 27354451008.

The previous prime is 27354450997. The next prime is 27354451013. The reversal of 27354451009 is 90015445372.

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., 18862275600 + 8492175409 = 137340^2 + 92153^2 .

It is a cyclic number.

It is not a de Polignac number, because 27354451009 - 2²¹ = 27352353857 is a prime.

It is a super-2 number, since 2×27354451009² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27354451039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13677225504 + 13677225505.

It is an arithmetic number, because the mean of its divisors is an integer number (13677225505).

Almost surely, 2^27354451009 is an apocalyptic number.

It is an amenable number.

27354451009 is a deficient number, since it is larger than the sum of its proper divisors (1).

27354451009 is an equidigital number, since it uses as much as digits as its factorization.

27354451009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 27354451009 in words is "twenty-seven billion, three hundred fifty-four million, four hundred fifty-one thousand, nine".