20300342545 has 12 divisors (see below), whose sum is σ = 28337621364. Its totient is φ = 13920234720.

The previous prime is 20300342477. The next prime is 20300342551. The reversal of 20300342545 is 54524300302.

It can be written as a sum of positive squares in 2 ways, for example, as 4355472016 + 15944870529 = 65996^2 + 126273^2 .

It is not a de Polignac number, because 20300342545 - 2⁷ = 20300342417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 41429026 + ... + 41429515.

It is an arithmetic number, because the mean of its divisors is an integer number (2361468447).

Almost surely, 2^20300342545 is an apocalyptic number.

It is an amenable number.

20300342545 is a deficient number, since it is larger than the sum of its proper divisors (8037278819).

20300342545 is an equidigital number, since it uses as much as digits as its factorization.

20300342545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82858560 (or 82858553 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 20300342545 its reverse (54524300302), we get a palindrome (74824642847).

The spelling of 20300342545 in words is "twenty billion, three hundred million, three hundred forty-two thousand, five hundred forty-five".