7644583315940 has 12 divisors (see below), whose sum is σ = 16053624963516. Its totient is φ = 3057833326368.

The previous prime is 7644583315937. The next prime is 7644583316059. The reversal of 7644583315940 is 495133854467.

It can be written as a sum of positive squares in 2 ways, for example, as 4148969757604 + 3495613558336 = 2036902^2 + 1869656^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7644583315940.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191114582879 + ... + 191114582918.

It is an arithmetic number, because the mean of its divisors is an integer number (1337802080293).

Almost surely, 2^{7644583315940} is an apocalyptic number.

It is an amenable number.

7644583315940 is an abundant number, since it is smaller than the sum of its proper divisors (8409041647576).

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

7644583315940 is a wasteful number, since it uses less digits than its factorization.

7644583315940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382229165806 (or 382229165804 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 59.

The spelling of 7644583315940 in words is "seven trillion, six hundred forty-four billion, five hundred eighty-three million, three hundred fifteen thousand, nine hundred forty".