747447118272 has 168 divisors, whose sum is σ = 2193236265792. Its totient is φ = 243265075200.

The previous prime is 747447118259. The next prime is 747447118277. The reversal of 747447118272 is 272811744747.

747447118272 is a `hidden beast` number, since 7 + 47 + 447 + 11 + 82 + 72 = 666.

It is a super-2 number, since 2×747447118272² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747447118277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11364522 + ... + 11430102.

Almost surely, 2^747447118272 is an apocalyptic number.

747447118272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747447118272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096618132896).

747447118272 is an abundant number, since it is smaller than the sum of its proper divisors (1445789147520).

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

747447118272 is a wasteful number, since it uses less digits than its factorization.

747447118272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66067 (or 66054 counting only the distinct ones).

The product of its digits is 4917248, while the sum is 54.

The spelling of 747447118272 in words is "seven hundred forty-seven billion, four hundred forty-seven million, one hundred eighteen thousand, two hundred seventy-two".