20352450553 has 32 divisors (see below), whose sum is σ = 22009688064. Its totient is φ = 18782400000.

The previous prime is 20352450523. The next prime is 20352450557. The reversal of 20352450553 is 35505425302.

It is a cyclic number.

It is not a de Polignac number, because 20352450553 - 2¹³ = 20352442361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20352450557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29033103 + ... + 29033803.

It is an arithmetic number, because the mean of its divisors is an integer number (687802752).

Almost surely, 2^20352450553 is an apocalyptic number.

It is an amenable number.

20352450553 is a deficient number, since it is larger than the sum of its proper divisors (1657237511).

20352450553 is a wasteful number, since it uses less digits than its factorization.

20352450553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257.

The product of its (nonzero) digits is 90000, while the sum is 34.

Adding to 20352450553 its reverse (35505425302), we get a palindrome (55857875855).

The spelling of 20352450553 in words is "twenty billion, three hundred fifty-two million, four hundred fifty thousand, five hundred fifty-three".