609313985281 has 2 divisors, whose sum is σ = 609313985282. Its totient is φ = 609313985280.

The previous prime is 609313985279. The next prime is 609313985321. The reversal of 609313985281 is 182589313906.

609313985281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556911450225 + 52402535056 = 746265^2 + 228916^2 .

It is a cyclic number.

It is not a de Polignac number, because 609313985281 - 2¹ = 609313985279 is a prime.

It is a super-2 number, since 2×609313985281² (a number of 24 digits) contains 22 as substring.

Together with 609313985279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (609313985221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304656992640 + 304656992641.

It is an arithmetic number, because the mean of its divisors is an integer number (304656992641).

Almost surely, 2^609313985281 is an apocalyptic number.

It is an amenable number.

609313985281 is a deficient number, since it is larger than the sum of its proper divisors (1).

609313985281 is an equidigital number, since it uses as much as digits as its factorization.

609313985281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 609313985281 in words is "six hundred nine billion, three hundred thirteen million, nine hundred eighty-five thousand, two hundred eighty-one".