641703344516 has 24 divisors (see below), whose sum is σ = 1209421507224. Its totient is φ = 296156689920.

The previous prime is 641703344501. The next prime is 641703344521. The reversal of 641703344516 is 615443307146.

It can be written as a sum of positive squares in 4 ways, for example, as 9194892100 + 632508452416 = 95890^2 + 795304^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853226 + ... + 1418238.

It is an arithmetic number, because the mean of its divisors is an integer number (50392562801).

Almost surely, 2^641703344516 is an apocalyptic number.

It is an amenable number.

641703344516 is a deficient number, since it is larger than the sum of its proper divisors (567718162708).

641703344516 is a wasteful number, since it uses less digits than its factorization.

641703344516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586871 (or 586869 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 641703344516 in words is "six hundred forty-one billion, seven hundred three million, three hundred forty-four thousand, five hundred sixteen".