120534255531 has 48 divisors (see below), whose sum is σ = 185277456000. Its totient is φ = 75374638080.

The previous prime is 120534255511. The next prime is 120534255539. The reversal of 120534255531 is 135552435021.

120534255531 is a `hidden beast` number, since 1 + 20 + 53 + 4 + 2 + 55 + 531 = 666.

It is not a de Polignac number, because 120534255531 - 2⁶ = 120534255467 is a prime.

It is a super-2 number, since 2×120534255531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120534255539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2533975 + ... + 2581103.

It is an arithmetic number, because the mean of its divisors is an integer number (3859947000).

Almost surely, 2^120534255531 is an apocalyptic number.

120534255531 is a deficient number, since it is larger than the sum of its proper divisors (64743200469).

120534255531 is a wasteful number, since it uses less digits than its factorization.

120534255531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47444 (or 47441 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 120534255531 in words is "one hundred twenty billion, five hundred thirty-four million, two hundred fifty-five thousand, five hundred thirty-one".