55042243413 has 4 divisors (see below), whose sum is σ = 73389657888. Its totient is φ = 36694828940.

The previous prime is 55042243393. The next prime is 55042243429. The reversal of 55042243413 is 31434224055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55042243413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55042243433) 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, 9173707233 + ... + 9173707238.

It is an arithmetic number, because the mean of its divisors is an integer number (18347414472).

Almost surely, 2^55042243413 is an apocalyptic number.

It is an amenable number.

55042243413 is a deficient number, since it is larger than the sum of its proper divisors (18347414475).

55042243413 is a wasteful number, since it uses less digits than its factorization.

55042243413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18347414474.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 55042243413 its reverse (31434224055), we get a palindrome (86476467468).

The spelling of 55042243413 in words is "fifty-five billion, forty-two million, two hundred forty-three thousand, four hundred thirteen".