609730973081 has 2 divisors, whose sum is σ = 609730973082. Its totient is φ = 609730973080.

The previous prime is 609730973051. The next prime is 609730973119. The reversal of 609730973081 is 180379037906.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 571543560025 + 38187413056 = 756005^2 + 195416^2 .

It is a cyclic number.

It is not a de Polignac number, because 609730973081 - 2¹⁸ = 609730710937 is a prime.

It is a super-2 number, since 2×609730973081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (609730973021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304865486540 + 304865486541.

It is an arithmetic number, because the mean of its divisors is an integer number (304865486541).

Almost surely, 2^609730973081 is an apocalyptic number.

It is an amenable number.

609730973081 is a deficient number, since it is larger than the sum of its proper divisors (1).

609730973081 is an equidigital number, since it uses as much as digits as its factorization.

609730973081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 609730973081 in words is "six hundred nine billion, seven hundred thirty million, nine hundred seventy-three thousand, eighty-one".