747221263672 has 64 divisors (see below), whose sum is σ = 1534541500800. Its totient is φ = 339039592320.

The previous prime is 747221263669. The next prime is 747221263681. The reversal of 747221263672 is 276362122747.

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, 1201479 + ... + 1714057.

It is an arithmetic number, because the mean of its divisors is an integer number (23977210950).

Almost surely, 2^747221263672 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 747221263672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767270750400).

747221263672 is an abundant number, since it is smaller than the sum of its proper divisors (787320237128).

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

747221263672 is a wasteful number, since it uses less digits than its factorization.

747221263672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512836 (or 512832 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 49.

The spelling of 747221263672 in words is "seven hundred forty-seven billion, two hundred twenty-one million, two hundred sixty-three thousand, six hundred seventy-two".