5639639040 has 832 divisors, whose sum is σ = 24156241920. Its totient is φ = 1220935680.

The previous prime is 5639638987. The next prime is 5639639051. The reversal of 5639639040 is 409369365.

It is a happy number.

5639639040 is a `hidden beast` number, since 5 + 6 + 3 + 9 + 639 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 119992297 + ... + 119992343.

Almost surely, 2^5639639040 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 5639639040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12078120960).

5639639040 is an abundant number, since it is smaller than the sum of its proper divisors (18516602880).

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

5639639040 is a wasteful number, since it uses less digits than its factorization.

5639639040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The square root of 5639639040 is about 75097.5301857524. The cubic root of 5639639040 is about 1779.9881158993.

The spelling of 5639639040 in words is "five billion, six hundred thirty-nine million, six hundred thirty-nine thousand, forty".