55566673332901 has 2 divisors, whose sum is σ = 55566673332902. Its totient is φ = 55566673332900.

The previous prime is 55566673332881. The next prime is 55566673332941. The reversal of 55566673332901 is 10923337666555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32722804548225 + 22843868784676 = 5720385^2 + 4779526^2 .

It is a cyclic number.

It is not a de Polignac number, because 55566673332901 - 2⁷ = 55566673332773 is a prime.

It is a super-2 number, since 2×55566673332901² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55566673332901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55566673332941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27783336666450 + 27783336666451.

It is an arithmetic number, because the mean of its divisors is an integer number (27783336666451).

Almost surely, 2^{55566673332901} is an apocalyptic number.

It is an amenable number.

55566673332901 is a deficient number, since it is larger than the sum of its proper divisors (1).

55566673332901 is an equidigital number, since it uses as much as digits as its factorization.

55566673332901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854000, while the sum is 61.

The spelling of 55566673332901 in words is "fifty-five trillion, five hundred sixty-six billion, six hundred seventy-three million, three hundred thirty-two thousand, nine hundred one".