20453424534 has 40 divisors (see below), whose sum is σ = 45955834848. Its totient is φ = 6799211280.

The previous prime is 20453424493. The next prime is 20453424539. The reversal of 20453424534 is 43542435402.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20453424539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 112557 + ... + 231464.

Almost surely, 2^20453424534 is an apocalyptic number.

20453424534 is an abundant number, since it is smaller than the sum of its proper divisors (25502410314).

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

20453424534 is a wasteful number, since it uses less digits than its factorization.

20453424534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344402 (or 344393 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 36.

Adding to 20453424534 its reverse (43542435402), we get a palindrome (63995859936).

The spelling of 20453424534 in words is "twenty billion, four hundred fifty-three million, four hundred twenty-four thousand, five hundred thirty-four".