5244642640 has 40 divisors (see below), whose sum is σ = 12286901088. Its totient is φ = 2081838720.

The previous prime is 5244642629. The next prime is 5244642653. The reversal of 5244642640 is 462464425.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 5244642640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239742 + ... + 260701.

Almost surely, 2^5244642640 is an apocalyptic number.

It is an amenable number.

5244642640 is an abundant number, since it is smaller than the sum of its proper divisors (7042258448).

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

5244642640 is a wasteful number, since it uses less digits than its factorization.

5244642640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500587 (or 500581 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

The square root of 5244642640 is about 72419.9049985569. The cubic root of 5244642640 is about 1737.4219362819.

The spelling of 5244642640 in words is "five billion, two hundred forty-four million, six hundred forty-two thousand, six hundred forty".