7920475812 has 120 divisors (see below), whose sum is σ = 21881059200. Its totient is φ = 2491383744.

The previous prime is 7920475811. The next prime is 7920475813. The reversal of 7920475812 is 2185740297.

It is a happy number.

7920475812 is a `hidden beast` number, since 7 + 9 + 20 + 47 + 581 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (7920475811) and next prime (7920475813).

It is not an unprimeable number, because it can be changed into a prime (7920475811) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1653573 + ... + 1658355.

It is an arithmetic number, because the mean of its divisors is an integer number (182342160).

Almost surely, 2^7920475812 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 7920475812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10940529600).

7920475812 is an abundant number, since it is smaller than the sum of its proper divisors (13960583388).

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

7920475812 is a wasteful number, since it uses less digits than its factorization.

7920475812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087 (or 5076 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 7920475812 is about 88997.0550748731. The cubic root of 7920475812 is about 1993.3509035884.

The spelling of 7920475812 in words is "seven billion, nine hundred twenty million, four hundred seventy-five thousand, eight hundred twelve".