747023216568 has 64 divisors (see below), whose sum is σ = 1919481000960. Its totient is φ = 242094842496.

The previous prime is 747023216507. The next prime is 747023216603. The reversal of 747023216568 is 865612320747.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 747023216568.

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, 861405 + ... + 1495347.

It is an arithmetic number, because the mean of its divisors is an integer number (29991890640).

Almost surely, 2^747023216568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747023216568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (959740500480).

747023216568 is an abundant number, since it is smaller than the sum of its proper divisors (1172457784392).

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

747023216568 is a wasteful number, since it uses less digits than its factorization.

747023216568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635316 (or 635312 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 747023216568 in words is "seven hundred forty-seven billion, twenty-three million, two hundred sixteen thousand, five hundred sixty-eight".