7478249633640 has 48 divisors (see below), whose sum is σ = 24304311310500. Its totient is φ = 1994199902208.

The previous prime is 7478249633587. The next prime is 7478249633653. The reversal of 7478249633640 is 463369428747.

7478249633640 is a `hidden beast` number, since 7 + 4 + 7 + 82 + 496 + 3 + 3 + 64 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7433158809924 + 45090823716 = 2726382^2 + 212346^2 .

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 11 ways as a sum of consecutive naturals, for example, 10386457465 + ... + 10386458184.

Almost surely, 2^{7478249633640} is an apocalyptic number.

It is an amenable number.

7478249633640 is an abundant number, since it is smaller than the sum of its proper divisors (16826061676860).

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

7478249633640 is a wasteful number, since it uses less digits than its factorization.

7478249633640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20772915666 (or 20772915659 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 63.

The spelling of 7478249633640 in words is "seven trillion, four hundred seventy-eight billion, two hundred forty-nine million, six hundred thirty-three thousand, six hundred forty".