55674785917 has 2 divisors, whose sum is σ = 55674785918. Its totient is φ = 55674785916.

The previous prime is 55674785867. The next prime is 55674785921. The reversal of 55674785917 is 71958747655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30927091321 + 24747694596 = 175861^2 + 157314^2 .

It is a cyclic number.

It is not a de Polignac number, because 55674785917 - 2¹¹ = 55674783869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55674785417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27837392958 + 27837392959.

It is an arithmetic number, because the mean of its divisors is an integer number (27837392959).

Almost surely, 2^55674785917 is an apocalyptic number.

It is an amenable number.

55674785917 is a deficient number, since it is larger than the sum of its proper divisors (1).

55674785917 is an equidigital number, since it uses as much as digits as its factorization.

55674785917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088000, while the sum is 64.

The spelling of 55674785917 in words is "fifty-five billion, six hundred seventy-four million, seven hundred eighty-five thousand, nine hundred seventeen".