20650447424 has 28 divisors (see below), whose sum is σ = 41075620668. Its totient is φ = 10300684800.

The previous prime is 20650447421. The next prime is 20650447429. The reversal of 20650447424 is 42474405602.

It can be written as a sum of positive squares in 2 ways, for example, as 5282382400 + 15368065024 = 72680^2 + 123968^2 .

It is a super-2 number, since 2×20650447424² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20650447421) 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, 356267 + ... + 410154.

Almost surely, 2^20650447424 is an apocalyptic number.

It is an amenable number.

20650447424 is a deficient number, since it is larger than the sum of its proper divisors (20425173244).

20650447424 is an equidigital number, since it uses as much as digits as its factorization.

20650447424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766854 (or 766844 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 38.

The spelling of 20650447424 in words is "twenty billion, six hundred fifty million, four hundred forty-seven thousand, four hundred twenty-four".