155252134120 has 64 divisors (see below), whose sum is σ = 354842208000. Its totient is φ = 61124222208.

The previous prime is 155252134043. The next prime is 155252134139. The reversal of 155252134120 is 21431252551.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 806161 + ... + 979999.

It is an arithmetic number, because the mean of its divisors is an integer number (5544409500).

Almost surely, 2^155252134120 is an apocalyptic number.

155252134120 is a gapful number since it is divisible by the number (10) 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 155252134120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177421104000).

155252134120 is an abundant number, since it is smaller than the sum of its proper divisors (199590073880).

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

155252134120 is a wasteful number, since it uses less digits than its factorization.

155252134120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174202 (or 174198 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 155252134120 its reverse (21431252551), we get a palindrome (176683386671).

The spelling of 155252134120 in words is "one hundred fifty-five billion, two hundred fifty-two million, one hundred thirty-four thousand, one hundred twenty".