120543354555 has 16 divisors (see below), whose sum is σ = 207705472800. Its totient is φ = 59344420608.

The previous prime is 120543354541. The next prime is 120543354619. The reversal of 120543354555 is 555453345021.

It is not a de Polignac number, because 120543354555 - 2⁷ = 120543354427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309085330 + ... + 309085719.

It is an arithmetic number, because the mean of its divisors is an integer number (12981592050).

Almost surely, 2^120543354555 is an apocalyptic number.

120543354555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120543354555 is a deficient number, since it is larger than the sum of its proper divisors (87162118245).

120543354555 is a wasteful number, since it uses less digits than its factorization.

120543354555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618171070.

The product of its (nonzero) digits is 900000, while the sum is 42.

Adding to 120543354555 its reverse (555453345021), we get a palindrome (675996699576).

The spelling of 120543354555 in words is "one hundred twenty billion, five hundred forty-three million, three hundred fifty-four thousand, five hundred fifty-five".