555664136523473 has 2 divisors, whose sum is σ = 555664136523474. Its totient is φ = 555664136523472.

The previous prime is 555664136523451. The next prime is 555664136523487. The reversal of 555664136523473 is 374325631466555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553056014882449 + 2608121641024 = 23517143^2 + 1614968^2 .

It is a cyclic number.

It is not a de Polignac number, because 555664136523473 - 2³⁰ = 555663062781649 is a prime.

It is not a weakly prime, because it can be changed into another prime (555664139523473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277832068261736 + 277832068261737.

It is an arithmetic number, because the mean of its divisors is an integer number (277832068261737).

Almost surely, 2^{555664136523473} is an apocalyptic number.

It is an amenable number.

555664136523473 is a deficient number, since it is larger than the sum of its proper divisors (1).

555664136523473 is an equidigital number, since it uses as much as digits as its factorization.

555664136523473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480000, while the sum is 65.

The spelling of 555664136523473 in words is "five hundred fifty-five trillion, six hundred sixty-four billion, one hundred thirty-six million, five hundred twenty-three thousand, four hundred seventy-three".