7991560810 has 32 divisors (see below), whose sum is σ = 14791491792. Its totient is φ = 3106460160.

The previous prime is 7991560771. The next prime is 7991560831. The reversal of 7991560810 is 180651997.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4392640729 + 3598920081 = 66277^2 + 59991^2 .

It is a super-2 number, since 2×7991560810² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302950 + ... + 328270.

Almost surely, 2^7991560810 is an apocalyptic number.

7991560810 is a deficient number, since it is larger than the sum of its proper divisors (6799930982).

7991560810 is a wasteful number, since it uses less digits than its factorization.

7991560810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26218.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 7991560810 is about 89395.5301455280. The cubic root of 7991560810 is about 1999.2964867302.

The spelling of 7991560810 in words is "seven billion, nine hundred ninety-one million, five hundred sixty thousand, eight hundred ten".