20650520244 has 12 divisors (see below), whose sum is σ = 48184547264. Its totient is φ = 6883506744.

The previous prime is 20650520243. The next prime is 20650520269. The reversal of 20650520244 is 44202505602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650520243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860438332 + ... + 860438355.

Almost surely, 2^20650520244 is an apocalyptic number.

It is an amenable number.

20650520244 is an abundant number, since it is smaller than the sum of its proper divisors (27534027020).

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

20650520244 is a wasteful number, since it uses less digits than its factorization.

20650520244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720876694 (or 1720876692 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 20650520244 in words is "twenty billion, six hundred fifty million, five hundred twenty thousand, two hundred forty-four".