23551239122142 has 24 divisors (see below), whose sum is σ = 49239452689224. Its totient is φ = 7509090733584.

The previous prime is 23551239122123. The next prime is 23551239122149. The reversal of 23551239122142 is 24122193215532.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23551239122094 and 23551239122103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23551239122149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3710021893 + ... + 3710028240.

It is an arithmetic number, because the mean of its divisors is an integer number (2051643862051).

Almost surely, 2^{23551239122142} is an apocalyptic number.

23551239122142 is an abundant number, since it is smaller than the sum of its proper divisors (25688213567082).

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

23551239122142 is a wasteful number, since it uses less digits than its factorization.

23551239122142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420050184 (or 7420050161 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The spelling of 23551239122142 in words is "twenty-three trillion, five hundred fifty-one billion, two hundred thirty-nine million, one hundred twenty-two thousand, one hundred forty-two".