155390234112 has 320 divisors, whose sum is σ = 472271469120. Its totient is φ = 51060326400.

The previous prime is 155390234101. The next prime is 155390234149. The reversal of 155390234112 is 211432093551.

It is a happy number.

155390234112 is a `hidden beast` number, since 1 + 5 + 539 + 0 + 2 + 3 + 4 + 112 = 666.

It is a super-2 number, since 2×155390234112² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81740362 + ... + 81742262.

It is an arithmetic number, because the mean of its divisors is an integer number (1475848341).

Almost surely, 2^155390234112 is an apocalyptic number.

155390234112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155390234112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236135734560).

155390234112 is an abundant number, since it is smaller than the sum of its proper divisors (316881235008).

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

155390234112 is an frugal number, since it uses more digits than its factorization.

155390234112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013 (or 1979 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 155390234112 in words is "one hundred fifty-five billion, three hundred ninety million, two hundred thirty-four thousand, one hundred twelve".