7812628731664 has 45 divisors (see below), whose sum is σ = 15323358636903. Its totient is φ = 3858791939616.

The previous prime is 7812628731641. The next prime is 7812628731683. The reversal of 7812628731664 is 4661378262187.

The square root of 7812628731664 is 2795108.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×7812628731664² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 927971647 + ... + 927980065.

Almost surely, 2^{7812628731664} is an apocalyptic number.

7812628731664 is the 2795108-th square number.

It is an amenable number.

7812628731664 is a deficient number, since it is larger than the sum of its proper divisors (7510729905239).

7812628731664 is an frugal number, since it uses more digits than its factorization.

7812628731664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17012 (or 8504 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 61.

The spelling of 7812628731664 in words is "seven trillion, eight hundred twelve billion, six hundred twenty-eight million, seven hundred thirty-one thousand, six hundred sixty-four".