55643550413 has 8 divisors (see below), whose sum is σ = 61203726336. Its totient is φ = 50585044620.

The previous prime is 55643550401. The next prime is 55643550421. The reversal of 55643550413 is 31405534655.

It is not a de Polignac number, because 55643550413 - 2⁶ = 55643550349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55643550113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20901581 + ... + 20904242.

It is an arithmetic number, because the mean of its divisors is an integer number (7650465792).

Almost surely, 2^55643550413 is an apocalyptic number.

It is an amenable number.

55643550413 is a deficient number, since it is larger than the sum of its proper divisors (5560175923).

55643550413 is an equidigital number, since it uses as much as digits as its factorization.

55643550413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41805856 (or 41805834 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 41.

The spelling of 55643550413 in words is "fifty-five billion, six hundred forty-three million, five hundred fifty thousand, four hundred thirteen".