609956055061 has 2 divisors, whose sum is σ = 609956055062. Its totient is φ = 609956055060.

The previous prime is 609956055047. The next prime is 609956055077. The reversal of 609956055061 is 160550659906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393121476036 + 216834579025 = 626994^2 + 465655^2 .

It is a cyclic number.

It is not a de Polignac number, because 609956055061 - 2⁵ = 609956055029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609956055161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304978027530 + 304978027531.

It is an arithmetic number, because the mean of its divisors is an integer number (304978027531).

Almost surely, 2^609956055061 is an apocalyptic number.

It is an amenable number.

609956055061 is a deficient number, since it is larger than the sum of its proper divisors (1).

609956055061 is an equidigital number, since it uses as much as digits as its factorization.

609956055061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187000, while the sum is 52.

The spelling of 609956055061 in words is "six hundred nine billion, nine hundred fifty-six million, fifty-five thousand, sixty-one".