20500435449 has 32 divisors (see below), whose sum is σ = 32716508160. Its totient is φ = 12612081024.

The previous prime is 20500435447. The next prime is 20500435477. The reversal of 20500435449 is 94453400502.

It is a happy number.

20500435449 is a `hidden beast` number, since 20 + 50 + 0 + 43 + 544 + 9 = 666.

It is not a de Polignac number, because 20500435449 - 2¹ = 20500435447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20500435447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1788952 + ... + 1800374.

It is an arithmetic number, because the mean of its divisors is an integer number (1022390880).

Almost surely, 2^20500435449 is an apocalyptic number.

It is an amenable number.

20500435449 is a deficient number, since it is larger than the sum of its proper divisors (12216072711).

20500435449 is a wasteful number, since it uses less digits than its factorization.

20500435449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16558 (or 16552 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 20500435449 in words is "twenty billion, five hundred million, four hundred thirty-five thousand, four hundred forty-nine".