345553487503 has 4 divisors (see below), whose sum is σ = 394918271440. Its totient is φ = 296188703568.

The previous prime is 345553487501. The next prime is 345553487509. The reversal of 345553487503 is 305784355543.

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 345553487503 - 2¹ = 345553487501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345553487501) 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, 24682391958 + ... + 24682391971.

It is an arithmetic number, because the mean of its divisors is an integer number (98729567860).

Almost surely, 2^345553487503 is an apocalyptic number.

345553487503 is a deficient number, since it is larger than the sum of its proper divisors (49364783937).

345553487503 is an equidigital number, since it uses as much as digits as its factorization.

345553487503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49364783936.

The product of its (nonzero) digits is 15120000, while the sum is 52.

The spelling of 345553487503 in words is "three hundred forty-five billion, five hundred fifty-three million, four hundred eighty-seven thousand, five hundred three".