120135125552 has 80 divisors (see below), whose sum is σ = 253792485408. Its totient is φ = 54759075840.

The previous prime is 120135125527. The next prime is 120135125557. The reversal of 120135125552 is 255521531021.

120135125552 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (120135125557) 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, 6642602 + ... + 6660662.

Almost surely, 2^120135125552 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 120135125552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126896242704).

120135125552 is an abundant number, since it is smaller than the sum of its proper divisors (133657359856).

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

120135125552 is a wasteful number, since it uses less digits than its factorization.

120135125552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18478 (or 18472 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 120135125552 its reverse (255521531021), we get a palindrome (375656656573).

The spelling of 120135125552 in words is "one hundred twenty billion, one hundred thirty-five million, one hundred twenty-five thousand, five hundred fifty-two".