7420640512 has 144 divisors (see below), whose sum is σ = 16132556160. Its totient is φ = 3397222400.

The previous prime is 7420640509. The next prime is 7420640527. The reversal of 7420640512 is 2150460247.

It is a congruent 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, 14242812 + ... + 14243332.

It is an arithmetic number, because the mean of its divisors is an integer number (112031640).

Almost surely, 2^7420640512 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 7420640512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8066278080).

7420640512 is an abundant number, since it is smaller than the sum of its proper divisors (8711915648).

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

7420640512 is a wasteful number, since it uses less digits than its factorization.

7420640512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 7420640512 is about 86143.1396688094. The cubic root of 7420640512 is about 1950.5052832173.

The spelling of 7420640512 in words is "seven billion, four hundred twenty million, six hundred forty thousand, five hundred twelve".