55366723673 has 2 divisors, whose sum is σ = 55366723674. Its totient is φ = 55366723672.

The previous prime is 55366723591. The next prime is 55366723693. The reversal of 55366723673 is 37632766355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52949231449 + 2417492224 = 230107^2 + 49168^2 .

It is a cyclic number.

It is not a de Polignac number, because 55366723673 - 2³⁰ = 54292981849 is a prime.

It is a super-2 number, since 2×55366723673² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55366723693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27683361836 + 27683361837.

It is an arithmetic number, because the mean of its divisors is an integer number (27683361837).

Almost surely, 2^55366723673 is an apocalyptic number.

It is an amenable number.

55366723673 is a deficient number, since it is larger than the sum of its proper divisors (1).

55366723673 is an equidigital number, since it uses as much as digits as its factorization.

55366723673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14288400, while the sum is 53.

The spelling of 55366723673 in words is "fifty-five billion, three hundred sixty-six million, seven hundred twenty-three thousand, six hundred seventy-three".