5020636640 has 48 divisors (see below), whose sum is σ = 11871310752. Its totient is φ = 2006552064.

The previous prime is 5020636637. The next prime is 5020636667. The reversal of 5020636640 is 466360205.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 5020636597 and 5020636606.

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, 185237 + ... + 210603.

It is an arithmetic number, because the mean of its divisors is an integer number (247318974).

Almost surely, 2^5020636640 is an apocalyptic number.

It is an amenable number.

5020636640 is an abundant number, since it is smaller than the sum of its proper divisors (6850674112).

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

5020636640 is a wasteful number, since it uses less digits than its factorization.

5020636640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26619 (or 26611 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 5020636640 is about 70856.4509413222. The cubic root of 5020636640 is about 1712.3252613723.

Adding to 5020636640 its reverse (466360205), we get a palindrome (5486996845).

The spelling of 5020636640 in words is "five billion, twenty million, six hundred thirty-six thousand, six hundred forty".