55424719789 has 4 divisors (see below), whose sum is σ = 55714901760. Its totient is φ = 55134537820.

The previous prime is 55424719781. The next prime is 55424719793. The reversal of 55424719789 is 98791742455.

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 not a de Polignac number, because 55424719789 - 2³ = 55424719781 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 (55424719781) 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, 145090699 + ... + 145091080.

It is an arithmetic number, because the mean of its divisors is an integer number (13928725440).

Almost surely, 2^55424719789 is an apocalyptic number.

It is an amenable number.

55424719789 is a deficient number, since it is larger than the sum of its proper divisors (290181971).

55424719789 is a wasteful number, since it uses less digits than its factorization.

55424719789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290181970.

The product of its digits is 25401600, while the sum is 61.

The spelling of 55424719789 in words is "fifty-five billion, four hundred twenty-four million, seven hundred nineteen thousand, seven hundred eighty-nine".