27742423073 has 2 divisors, whose sum is σ = 27742423074. Its totient is φ = 27742423072.

The previous prime is 27742423031. The next prime is 27742423141. The reversal of 27742423073 is 37032424772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21474850849 + 6267572224 = 146543^2 + 79168^2 .

It is a cyclic number.

It is not a de Polignac number, because 27742423073 - 2¹⁶ = 27742357537 is a prime.

It is a super-2 number, since 2×27742423073² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27742423073.

It is not a weakly prime, because it can be changed into another prime (27742423873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13871211536 + 13871211537.

It is an arithmetic number, because the mean of its divisors is an integer number (13871211537).

Almost surely, 2^27742423073 is an apocalyptic number.

It is an amenable number.

27742423073 is a deficient number, since it is larger than the sum of its proper divisors (1).

27742423073 is an equidigital number, since it uses as much as digits as its factorization.

27742423073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 41.

The spelling of 27742423073 in words is "twenty-seven billion, seven hundred forty-two million, four hundred twenty-three thousand, seventy-three".