20224389501 has 20 divisors (see below), whose sum is σ = 30281567932. Its totient is φ = 13451764608.

The previous prime is 20224389499. The next prime is 20224389511. The reversal of 20224389501 is 10598342202.

It is a happy number.

20224389501 is a `hidden beast` number, since 2 + 0 + 224 + 389 + 50 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9109748025 + 11114641476 = 95445^2 + 105426^2 .

It is not a de Polignac number, because 20224389501 - 2¹ = 20224389499 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20224389511) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 253246 + ... + 323391.

Almost surely, 2^20224389501 is an apocalyptic number.

It is an amenable number.

20224389501 is a deficient number, since it is larger than the sum of its proper divisors (10057178431).

20224389501 is an equidigital number, since it uses as much as digits as its factorization.

20224389501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577082 (or 577073 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 20224389501 in words is "twenty billion, two hundred twenty-four million, three hundred eighty-nine thousand, five hundred one".