27440947724669 has 2 divisors, whose sum is σ = 27440947724670. Its totient is φ = 27440947724668.

The previous prime is 27440947724647. The next prime is 27440947724713. The reversal of 27440947724669 is 96642774904472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16254685524100 + 11186262200569 = 4031710^2 + 3344587^2 .

It is a cyclic number.

It is not a de Polignac number, because 27440947724669 - 2³² = 27436652757373 is a prime.

It is a super-2 number, since 2×27440947724669² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27440947744669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13720473862334 + 13720473862335.

It is an arithmetic number, because the mean of its divisors is an integer number (13720473862335).

Almost surely, 2^{27440947724669} is an apocalyptic number.

It is an amenable number.

27440947724669 is a deficient number, since it is larger than the sum of its proper divisors (1).

27440947724669 is an equidigital number, since it uses as much as digits as its factorization.

27440947724669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024192512, while the sum is 71.

The spelling of 27440947724669 in words is "twenty-seven trillion, four hundred forty billion, nine hundred forty-seven million, seven hundred twenty-four thousand, six hundred sixty-nine".