64773226768 has 20 divisors (see below), whose sum is σ = 129546454528. Its totient is φ = 31341883680.

The previous prime is 64773226757. The next prime is 64773226789. The reversal of 64773226768 is 86762237746.

64773226768 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65295096 + ... + 65296087.

Almost surely, 2^64773226768 is an apocalyptic number.

It is an amenable number.

64773226768 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64773226768 is a wasteful number, since it uses less digits than its factorization.

64773226768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130591222 (or 130591216 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 58.

The spelling of 64773226768 in words is "sixty-four billion, seven hundred seventy-three million, two hundred twenty-six thousand, seven hundred sixty-eight".