155112311251422 has 144 divisors (see below), whose sum is σ = 411628775397840. Its totient is φ = 41974440350976.

The previous prime is 155112311251421. The next prime is 155112311251427. The reversal of 155112311251422 is 224152113211551.

155112311251422 is a `hidden beast` number, since 1 + 5 + 5 + 1 + 1 + 2 + 3 + 112 + 514 + 22 = 666.

155112311251422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155112311251421) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 63777058 + ... + 66164474.

It is an arithmetic number, because the mean of its divisors is an integer number (2858533162485).

Almost surely, 2^{155112311251422} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155112311251422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205814387698920).

155112311251422 is an abundant number, since it is smaller than the sum of its proper divisors (256516464146418).

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

155112311251422 is a wasteful number, since it uses less digits than its factorization.

155112311251422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391335 (or 2391325 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

Adding to 155112311251422 its reverse (224152113211551), we get a palindrome (379264424462973).

The spelling of 155112311251422 in words is "one hundred fifty-five trillion, one hundred twelve billion, three hundred eleven million, two hundred fifty-one thousand, four hundred twenty-two".