345555555555503 has 2 divisors, whose sum is σ = 345555555555504. Its totient is φ = 345555555555502.

The previous prime is 345555555555467. The next prime is 345555555555577. The reversal of 345555555555503 is 305555555555543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345555555555503 - 2³² = 345551260588207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345555555555503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345555555555593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172777777777751 + 172777777777752.

It is an arithmetic number, because the mean of its divisors is an integer number (172777777777752).

Almost surely, 2^{345555555555503} is an apocalyptic number.

345555555555503 is a deficient number, since it is larger than the sum of its proper divisors (1).

345555555555503 is an equidigital number, since it uses as much as digits as its factorization.

345555555555503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1757812500, while the sum is 65.

The spelling of 345555555555503 in words is "three hundred forty-five trillion, five hundred fifty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred three".