20302064557 has 16 divisors (see below), whose sum is σ = 21394327680. Its totient is φ = 19227523392.

The previous prime is 20302064527. The next prime is 20302064567. The reversal of 20302064557 is 75546020302.

It is a cyclic number.

It is not a de Polignac number, because 20302064557 - 2³¹ = 18154580909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302064527) 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 15 ways as a sum of consecutive naturals, for example, 6107898 + ... + 6111220.

It is an arithmetic number, because the mean of its divisors is an integer number (1337145480).

Almost surely, 2^20302064557 is an apocalyptic number.

It is an amenable number.

20302064557 is a deficient number, since it is larger than the sum of its proper divisors (1092263123).

20302064557 is a wasteful number, since it uses less digits than its factorization.

20302064557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892.

The product of its (nonzero) digits is 50400, while the sum is 34.

Adding to 20302064557 its reverse (75546020302), we get a palindrome (95848084859).

The spelling of 20302064557 in words is "twenty billion, three hundred two million, sixty-four thousand, five hundred fifty-seven".