27665001399953 has 2 divisors, whose sum is σ = 27665001399954. Its totient is φ = 27665001399952.

The previous prime is 27665001399923. The next prime is 27665001400033. The reversal of 27665001399953 is 35999310056672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14018981221249 + 13646020178704 = 3744193^2 + 3694052^2 .

It is a cyclic number.

It is not a de Polignac number, because 27665001399953 - 2¹⁰ = 27665001398929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27665001399953.

It is not a weakly prime, because it can be changed into another prime (27665001399913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13832500699976 + 13832500699977.

It is an arithmetic number, because the mean of its divisors is an integer number (13832500699977).

Almost surely, 2^{27665001399953} is an apocalyptic number.

It is an amenable number.

27665001399953 is a deficient number, since it is larger than the sum of its proper divisors (1).

27665001399953 is an equidigital number, since it uses as much as digits as its factorization.

27665001399953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82668600, while the sum is 65.

The spelling of 27665001399953 in words is "twenty-seven trillion, six hundred sixty-five billion, one million, three hundred ninety-nine thousand, nine hundred fifty-three".