55619794679 has 2 divisors, whose sum is σ = 55619794680. Its totient is φ = 55619794678.

The previous prime is 55619794673. The next prime is 55619794687. The reversal of 55619794679 is 97649791655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55619794679 - 2⁸ = 55619794423 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55619794673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27809897339 + 27809897340.

It is an arithmetic number, because the mean of its divisors is an integer number (27809897340).

Almost surely, 2^55619794679 is an apocalyptic number.

55619794679 is a deficient number, since it is larger than the sum of its proper divisors (1).

55619794679 is an equidigital number, since it uses as much as digits as its factorization.

55619794679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128595600, while the sum is 68.

The spelling of 55619794679 in words is "fifty-five billion, six hundred nineteen million, seven hundred ninety-four thousand, six hundred seventy-nine".