20452537384 has 64 divisors (see below), whose sum is σ = 41664960000. Its totient is φ = 9381417408.

The previous prime is 20452537381. The next prime is 20452537393. The reversal of 20452537384 is 48373525402.

It is a self number, because there is not a number n which added to its sum of digits gives 20452537384.

It is not an unprimeable number, because it can be changed into a prime (20452537381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583837 + ... + 617875.

It is an arithmetic number, because the mean of its divisors is an integer number (651015000).

Almost surely, 2^20452537384 is an apocalyptic number.

It is an amenable number.

20452537384 is an abundant number, since it is smaller than the sum of its proper divisors (21212422616).

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

20452537384 is a wasteful number, since it uses less digits than its factorization.

20452537384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34190 (or 34186 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 43.

The spelling of 20452537384 in words is "twenty billion, four hundred fifty-two million, five hundred thirty-seven thousand, three hundred eighty-four".