120520055145531 has 8 divisors (see below), whose sum is σ = 161059451069440. Its totient is φ = 80163681325992.

The previous prime is 120520055145481. The next prime is 120520055145593. The reversal of 120520055145531 is 135541550025021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120520055145531 - 2¹⁰ = 120520055144507 is a prime.

It is a super-2 number, since 2×120520055145531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120520055145531.

It is not an unprimeable number, because it can be changed into a prime (120520055145431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45755524555 + ... + 45755527188.

It is an arithmetic number, because the mean of its divisors is an integer number (20132431383680).

Almost surely, 2^{120520055145531} is an apocalyptic number.

120520055145531 is a deficient number, since it is larger than the sum of its proper divisors (40539395923909).

120520055145531 is an equidigital number, since it uses as much as digits as its factorization.

120520055145531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91511052185.

The product of its (nonzero) digits is 150000, while the sum is 39.

The spelling of 120520055145531 in words is "one hundred twenty trillion, five hundred twenty billion, fifty-five million, one hundred forty-five thousand, five hundred thirty-one".