20500434052 has 24 divisors (see below), whose sum is σ = 41117037696. Its totient is φ = 8761006848.

The previous prime is 20500433983. The next prime is 20500434061. The reversal of 20500434052 is 25043400502.

It is a super-2 number, since 2×20500434052² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027168 + ... + 1046935.

It is an arithmetic number, because the mean of its divisors is an integer number (1713209904).

Almost surely, 2^20500434052 is an apocalyptic number.

It is an amenable number.

20500434052 is an abundant number, since it is smaller than the sum of its proper divisors (20616603644).

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

20500434052 is a wasteful number, since it uses less digits than its factorization.

20500434052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074467 (or 2074465 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 20500434052 its reverse (25043400502), we get a palindrome (45543834554).

The spelling of 20500434052 in words is "twenty billion, five hundred million, four hundred thirty-four thousand, fifty-two".