609258861121 has 2 divisors, whose sum is σ = 609258861122. Its totient is φ = 609258861120.

The previous prime is 609258861073. The next prime is 609258861187. The reversal of 609258861121 is 121168852906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 548986156096 + 60272705025 = 740936^2 + 245505^2 .

It is a cyclic number.

It is not a de Polignac number, because 609258861121 - 2¹⁷ = 609258730049 is a prime.

It is not a weakly prime, because it can be changed into another prime (609258867121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304629430560 + 304629430561.

It is an arithmetic number, because the mean of its divisors is an integer number (304629430561).

Almost surely, 2^609258861121 is an apocalyptic number.

It is an amenable number.

609258861121 is a deficient number, since it is larger than the sum of its proper divisors (1).

609258861121 is an equidigital number, since it uses as much as digits as its factorization.

609258861121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 609258861121 in words is "six hundred nine billion, two hundred fifty-eight million, eight hundred sixty-one thousand, one hundred twenty-one".