55123123422 has 8 divisors (see below), whose sum is σ = 110246246856. Its totient is φ = 18374374472.

The previous prime is 55123123417. The next prime is 55123123423. The reversal of 55123123422 is 22432132155.

It is a sphenic number, since it is the product of 3 distinct primes.

55123123422 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 55123123422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55123123423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4593593613 + ... + 4593593624.

It is an arithmetic number, because the mean of its divisors is an integer number (13780780857).

Almost surely, 2^55123123422 is an apocalyptic number.

55123123422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55123123422 is a wasteful number, since it uses less digits than its factorization.

55123123422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187187242.

The product of its digits is 14400, while the sum is 30.

Adding to 55123123422 its reverse (22432132155), we get a palindrome (77555255577).

The spelling of 55123123422 in words is "fifty-five billion, one hundred twenty-three million, one hundred twenty-three thousand, four hundred twenty-two".