43217487272 has 8 divisors (see below), whose sum is σ = 81032788650. Its totient is φ = 21608743632.

The previous prime is 43217487251. The next prime is 43217487319. The reversal of 43217487272 is 27278471234.

43217487272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 34205022916 + 9012464356 = 184946^2 + 94934^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×43217487272² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2701092947 + ... + 2701092962.

Almost surely, 2^43217487272 is an apocalyptic number.

It is an amenable number.

43217487272 is a deficient number, since it is larger than the sum of its proper divisors (37815301378).

43217487272 is a wasteful number, since it uses less digits than its factorization.

43217487272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402185915 (or 5402185911 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 47.

The spelling of 43217487272 in words is "forty-three billion, two hundred seventeen million, four hundred eighty-seven thousand, two hundred seventy-two".