27354450997 has 2 divisors, whose sum is σ = 27354450998. Its totient is φ = 27354450996.

The previous prime is 27354450983. The next prime is 27354451009. The reversal of 27354450997 is 79905445372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20853092836 + 6501358161 = 144406^2 + 80631^2 .

It is a cyclic number.

It is not a de Polignac number, because 27354450997 - 2²³ = 27346062389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27354459997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13677225498 + 13677225499.

It is an arithmetic number, because the mean of its divisors is an integer number (13677225499).

Almost surely, 2^27354450997 is an apocalyptic number.

It is an amenable number.

27354450997 is a deficient number, since it is larger than the sum of its proper divisors (1).

27354450997 is an equidigital number, since it uses as much as digits as its factorization.

27354450997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9525600, while the sum is 55.

The spelling of 27354450997 in words is "twenty-seven billion, three hundred fifty-four million, four hundred fifty thousand, nine hundred ninety-seven".