155120511353312 has 96 divisors (see below), whose sum is σ = 326303653737600. Its totient is φ = 72372842454528.

The previous prime is 155120511353209. The next prime is 155120511353317. The reversal of 155120511353312 is 213353115021551.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155120511353317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349007639 + ... + 349451817.

It is an arithmetic number, because the mean of its divisors is an integer number (3398996393100).

Almost surely, 2^{155120511353312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155120511353312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163151826868800).

155120511353312 is an abundant number, since it is smaller than the sum of its proper divisors (171183142384288).

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

155120511353312 is a wasteful number, since it uses less digits than its factorization.

155120511353312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452848 (or 452840 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 38.

Adding to 155120511353312 its reverse (213353115021551), we get a palindrome (368473626374863).

The spelling of 155120511353312 in words is "one hundred fifty-five trillion, one hundred twenty billion, five hundred eleven million, three hundred fifty-three thousand, three hundred twelve".