55163075399 has 2 divisors, whose sum is σ = 55163075400. Its totient is φ = 55163075398.

The previous prime is 55163075381. The next prime is 55163075419. The reversal of 55163075399 is 99357036155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55163075399 - 2²⁰ = 55162026823 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55163075399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55163075309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27581537699 + 27581537700.

It is an arithmetic number, because the mean of its divisors is an integer number (27581537700).

Almost surely, 2^55163075399 is an apocalyptic number.

55163075399 is a deficient number, since it is larger than the sum of its proper divisors (1).

55163075399 is an equidigital number, since it uses as much as digits as its factorization.

55163075399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3827250, while the sum is 53.

The spelling of 55163075399 in words is "fifty-five billion, one hundred sixty-three million, seventy-five thousand, three hundred ninety-nine".