7944533712 has 30 divisors (see below), whose sum is σ = 22233660722. Its totient is φ = 2648177856.

The previous prime is 7944533629. The next prime is 7944533747. The reversal of 7944533712 is 2173354497.

7944533712 is a `hidden beast` number, since 7 + 9 + 44 + 533 + 71 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5784515136 + 2160018576 = 76056^2 + 46476^2 .

It is a super-2 number, since 2×7944533712² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27585043 + ... + 27585330.

Almost surely, 2^7944533712 is an apocalyptic number.

7944533712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7944533712 is an abundant number, since it is smaller than the sum of its proper divisors (14289127010).

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

7944533712 is a wasteful number, since it uses less digits than its factorization.

7944533712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55170387 (or 55170378 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 7944533712 is about 89132.1138086605. The cubic root of 7944533712 is about 1995.3670856724.

The spelling of 7944533712 in words is "seven billion, nine hundred forty-four million, five hundred thirty-three thousand, seven hundred twelve".