55643413871 has 4 divisors (see below), whose sum is σ = 55840033992. Its totient is φ = 55446793752.

The previous prime is 55643413867. The next prime is 55643413877. The reversal of 55643413871 is 17831434655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17831434655 = 5 ⋅3566286931.

It is a cyclic number.

It is not a de Polignac number, because 55643413871 - 2² = 55643413867 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 (55643413877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98309636 + ... + 98310201.

It is an arithmetic number, because the mean of its divisors is an integer number (13960008498).

Almost surely, 2^55643413871 is an apocalyptic number.

55643413871 is a deficient number, since it is larger than the sum of its proper divisors (196620121).

55643413871 is a wasteful number, since it uses less digits than its factorization.

55643413871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196620120.

The product of its digits is 1209600, while the sum is 47.

The spelling of 55643413871 in words is "fifty-five billion, six hundred forty-three million, four hundred thirteen thousand, eight hundred seventy-one".