64642226664604 has 6 divisors (see below), whose sum is σ = 113123896663064. Its totient is φ = 32321113332300.

The previous prime is 64642226664539. The next prime is 64642226664607. The reversal of 64642226664604 is 40646662224646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64642226664607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080278333072 + ... + 8080278333079.

Almost surely, 2^{64642226664604} is an apocalyptic number.

It is an amenable number.

64642226664604 is a deficient number, since it is larger than the sum of its proper divisors (48481669998460).

64642226664604 is a wasteful number, since it uses less digits than its factorization.

64642226664604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16160556666155 (or 16160556666153 counting only the distinct ones).

The product of its (nonzero) digits is 95551488, while the sum is 58.

The spelling of 64642226664604 in words is "sixty-four trillion, six hundred forty-two billion, two hundred twenty-six million, six hundred sixty-four thousand, six hundred four".