55646438383 has 2 divisors, whose sum is σ = 55646438384. Its totient is φ = 55646438382.

The previous prime is 55646438359. The next prime is 55646438413. The reversal of 55646438383 is 38383464655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55646438383 - 2⁹ = 55646437871 is a prime.

It is a super-2 number, since 2×55646438383² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55646438483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27823219191 + 27823219192.

It is an arithmetic number, because the mean of its divisors is an integer number (27823219192).

Almost surely, 2^55646438383 is an apocalyptic number.

55646438383 is a deficient number, since it is larger than the sum of its proper divisors (1).

55646438383 is an equidigital number, since it uses as much as digits as its factorization.

55646438383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24883200, while the sum is 55.

The spelling of 55646438383 in words is "fifty-five billion, six hundred forty-six million, four hundred thirty-eight thousand, three hundred eighty-three".