641653611364 has 6 divisors (see below), whose sum is σ = 1122893819894. Its totient is φ = 320826805680.

The previous prime is 641653611337. The next prime is 641653611419. The reversal of 641653611364 is 463116356146.

It can be written as a sum of positive squares in only one way, i.e., 487525132900 + 154128478464 = 698230^2 + 392592^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80206701417 + ... + 80206701424.

Almost surely, 2^641653611364 is an apocalyptic number.

It is an amenable number.

641653611364 is a deficient number, since it is larger than the sum of its proper divisors (481240208530).

641653611364 is a wasteful number, since it uses less digits than its factorization.

641653611364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160413402845 (or 160413402843 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The spelling of 641653611364 in words is "six hundred forty-one billion, six hundred fifty-three million, six hundred eleven thousand, three hundred sixty-four".