27451463653 has 2 divisors, whose sum is σ = 27451463654. Its totient is φ = 27451463652.

The previous prime is 27451463593. The next prime is 27451463671. The reversal of 27451463653 is 35636415472.

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., 27132019524 + 319444129 = 164718^2 + 17873^2 .

It is a cyclic number.

It is not a de Polignac number, because 27451463653 - 2⁹ = 27451463141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27451463353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13725731826 + 13725731827.

It is an arithmetic number, because the mean of its divisors is an integer number (13725731827).

Almost surely, 2^27451463653 is an apocalyptic number.

It is an amenable number.

27451463653 is a deficient number, since it is larger than the sum of its proper divisors (1).

27451463653 is an equidigital number, since it uses as much as digits as its factorization.

27451463653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 46.

The spelling of 27451463653 in words is "twenty-seven billion, four hundred fifty-one million, four hundred sixty-three thousand, six hundred fifty-three".