27717245401 has 2 divisors, whose sum is σ = 27717245402. Its totient is φ = 27717245400.

The previous prime is 27717245371. The next prime is 27717245411. The reversal of 27717245401 is 10454271772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21105116176 + 6612129225 = 145276^2 + 81315^2 .

It is a cyclic number.

It is not a de Polignac number, because 27717245401 - 2⁷ = 27717245273 is a prime.

It is not a weakly prime, because it can be changed into another prime (27717245411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13858622700 + 13858622701.

It is an arithmetic number, because the mean of its divisors is an integer number (13858622701).

Almost surely, 2^27717245401 is an apocalyptic number.

It is an amenable number.

27717245401 is a deficient number, since it is larger than the sum of its proper divisors (1).

27717245401 is an equidigital number, since it uses as much as digits as its factorization.

27717245401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109760, while the sum is 40.

The spelling of 27717245401 in words is "twenty-seven billion, seven hundred seventeen million, two hundred forty-five thousand, four hundred one".