120503555563 has 4 divisors (see below), whose sum is σ = 121609092880. Its totient is φ = 119398018248.

The previous prime is 120503555533. The next prime is 120503555569. The reversal of 120503555563 is 365555305021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120503555563 - 2³³ = 111913620971 is a prime.

It is a super-2 number, since 2×120503555563² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120503555569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552768495 + ... + 552768712.

It is an arithmetic number, because the mean of its divisors is an integer number (30402273220).

Almost surely, 2^120503555563 is an apocalyptic number.

120503555563 is a deficient number, since it is larger than the sum of its proper divisors (1105537317).

120503555563 is a wasteful number, since it uses less digits than its factorization.

120503555563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105537316.

The product of its (nonzero) digits is 337500, while the sum is 40.

The spelling of 120503555563 in words is "one hundred twenty billion, five hundred three million, five hundred fifty-five thousand, five hundred sixty-three".