345404863663 has 2 divisors, whose sum is σ = 345404863664. Its totient is φ = 345404863662.

The previous prime is 345404863633. The next prime is 345404863681. The reversal of 345404863663 is 366368404543.

It is a strong prime.

It is an emirp because it is prime and its reverse (366368404543) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345404863663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345404863663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345404863633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172702431831 + 172702431832.

It is an arithmetic number, because the mean of its divisors is an integer number (172702431832).

Almost surely, 2^345404863663 is an apocalyptic number.

345404863663 is a deficient number, since it is larger than the sum of its proper divisors (1).

345404863663 is an equidigital number, since it uses as much as digits as its factorization.

345404863663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14929920, while the sum is 52.

The spelling of 345404863663 in words is "three hundred forty-five billion, four hundred four million, eight hundred sixty-three thousand, six hundred sixty-three".