747666655728 has 80 divisors (see below), whose sum is σ = 1947730027776. Its totient is φ = 247132753920.

The previous prime is 747666655679. The next prime is 747666655787. The reversal of 747666655728 is 827556666747.

747666655728 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2751351 + ... + 3010857.

Almost surely, 2^747666655728 is an apocalyptic number.

It is an amenable number.

747666655728 is an abundant number, since it is smaller than the sum of its proper divisors (1200063372048).

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

747666655728 is a wasteful number, since it uses less digits than its factorization.

747666655728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260022 (or 260016 counting only the distinct ones).

The product of its digits is 711244800, while the sum is 69.

The spelling of 747666655728 in words is "seven hundred forty-seven billion, six hundred sixty-six million, six hundred fifty-five thousand, seven hundred twenty-eight".