7961747072 has 16 divisors (see below), whose sum is σ = 15861293250. Its totient is φ = 3980873472.

The previous prime is 7961747051. The next prime is 7961747089. The reversal of 7961747072 is 2707471697.

It can be written as a sum of positive squares in only one way, i.e., 7952358976 + 9388096 = 89176^2 + 3064^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 7961747072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31100447 + ... + 31100702.

Almost surely, 2^7961747072 is an apocalyptic number.

It is an amenable number.

7961747072 is a deficient number, since it is larger than the sum of its proper divisors (7899546178).

7961747072 is an equidigital number, since it uses as much as digits as its factorization.

7961747072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62201163 (or 62201151 counting only the distinct ones).

The product of its (nonzero) digits is 1037232, while the sum is 50.

The square root of 7961747072 is about 89228.6224930095. The cubic root of 7961747072 is about 1996.8071616039.

The spelling of 7961747072 in words is "seven billion, nine hundred sixty-one million, seven hundred forty-seven thousand, seventy-two".