52727640661 has 2 divisors, whose sum is σ = 52727640662. Its totient is φ = 52727640660.

The previous prime is 52727640617. The next prime is 52727640739. The reversal of 52727640661 is 16604672725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52727640625 + 36 = 229625^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 52727640661 - 2¹⁹ = 52727116373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52727641661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26363820330 + 26363820331.

It is an arithmetic number, because the mean of its divisors is an integer number (26363820331).

Almost surely, 2^52727640661 is an apocalyptic number.

It is an amenable number.

52727640661 is a deficient number, since it is larger than the sum of its proper divisors (1).

52727640661 is an equidigital number, since it uses as much as digits as its factorization.

52727640661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 52727640661 in words is "fifty-two billion, seven hundred twenty-seven million, six hundred forty thousand, six hundred sixty-one".