155253312432120 has 128 divisors (see below), whose sum is σ = 532427772119040. Its totient is φ = 35477758018560.

The previous prime is 155253312432107. The next prime is 155253312432161. The reversal of 155253312432120 is 21234213352551.

155253312432120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155253312432120² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19267776 + ... + 26110415.

It is an arithmetic number, because the mean of its divisors is an integer number (4159591969680).

Almost surely, 2^{155253312432120} is an apocalyptic number.

155253312432120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155253312432120 is an abundant number, since it is smaller than the sum of its proper divisors (377174459686920).

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

155253312432120 is a wasteful number, since it uses less digits than its factorization.

155253312432120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45382285 (or 45382281 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 155253312432120 its reverse (21234213352551), we get a palindrome (176487525784671).

The spelling of 155253312432120 in words is "one hundred fifty-five trillion, two hundred fifty-three billion, three hundred twelve million, four hundred thirty-two thousand, one hundred twenty".