7812662912 has 64 divisors (see below), whose sum is σ = 15734846400. Its totient is φ = 3863752704.

The previous prime is 7812662909. The next prime is 7812662917. The reversal of 7812662912 is 2192662187.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×7812662912² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7812662917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5995253 + ... + 5996555.

It is an arithmetic number, because the mean of its divisors is an integer number (245856975).

Almost surely, 2^7812662912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7812662912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7867423200).

7812662912 is an abundant number, since it is smaller than the sum of its proper divisors (7922183488).

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

7812662912 is a wasteful number, since it uses less digits than its factorization.

7812662912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793 (or 1781 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 7812662912 is about 88389.2692129537. The cubic root of 7812662912 is about 1984.2651072207.

The spelling of 7812662912 in words is "seven billion, eight hundred twelve million, six hundred sixty-two thousand, nine hundred twelve".