5638625040 has 80 divisors (see below), whose sum is σ = 17906103936. Its totient is φ = 1466956800.

The previous prime is 5638625023. The next prime is 5638625143. The reversal of 5638625040 is 405268365.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×5638625040³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5638625040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276676 + ... + 296355.

Almost surely, 2^5638625040 is an apocalyptic number.

It is an amenable number.

5638625040 is an abundant number, since it is smaller than the sum of its proper divisors (12267478896).

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

5638625040 is a wasteful number, since it uses less digits than its factorization.

5638625040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573088 (or 573082 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 5638625040 is about 75090.7786615640. The cubic root of 5638625040 is about 1779.8814296308.

The spelling of 5638625040 in words is "five billion, six hundred thirty-eight million, six hundred twenty-five thousand, forty".