355545320503 has 4 divisors (see below), whose sum is σ = 355546626120. Its totient is φ = 355544014888.

The previous prime is 355545320453. The next prime is 355545320551. The reversal of 355545320503 is 305023545553.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 305023545553 = 743 ⋅410529671.

It is a cyclic number.

It is not a de Polignac number, because 355545320503 - 2²⁹ = 355008449591 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 (355545320573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72193 + ... + 846346.

It is an arithmetic number, because the mean of its divisors is an integer number (88886656530).

Almost surely, 2^355545320503 is an apocalyptic number.

355545320503 is a deficient number, since it is larger than the sum of its proper divisors (1305617).

355545320503 is an equidigital number, since it uses as much as digits as its factorization.

355545320503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305616.

The product of its (nonzero) digits is 675000, while the sum is 40.

The spelling of 355545320503 in words is "three hundred fifty-five billion, five hundred forty-five million, three hundred twenty thousand, five hundred three".