120532541551 has 4 divisors (see below), whose sum is σ = 127622691072. Its totient is φ = 113442392032.

The previous prime is 120532541543. The next prime is 120532541561. The reversal of 120532541551 is 155145235021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155145235021 = 7 ⋅22163605003.

It is a cyclic number.

It is not a de Polignac number, because 120532541551 - 2³ = 120532541543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120532541561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3545074735 + ... + 3545074768.

It is an arithmetic number, because the mean of its divisors is an integer number (31905672768).

Almost surely, 2^120532541551 is an apocalyptic number.

120532541551 is a deficient number, since it is larger than the sum of its proper divisors (7090149521).

120532541551 is an equidigital number, since it uses as much as digits as its factorization.

120532541551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7090149520.

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 120532541551 its reverse (155145235021), we get a palindrome (275677776572).

It can be divided in two parts, 12053 and 2541551, that added together give a square (2553604 = 1598²).

The spelling of 120532541551 in words is "one hundred twenty billion, five hundred thirty-two million, five hundred forty-one thousand, five hundred fifty-one".