20003561301264 has 80 divisors (see below), whose sum is σ = 54448005580800. Its totient is φ = 6310833994368.

The previous prime is 20003561301239. The next prime is 20003561301313. The reversal of 20003561301264 is 46210316530002.

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 15 ways as a sum of consecutive naturals, for example, 9607644 + ... + 11502779.

It is an arithmetic number, because the mean of its divisors is an integer number (680600069760).

Almost surely, 2^{20003561301264} is an apocalyptic number.

20003561301264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20003561301264 is an abundant number, since it is smaller than the sum of its proper divisors (34444444279536).

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

20003561301264 is a wasteful number, since it uses less digits than its factorization.

20003561301264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21111492 (or 21111486 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 20003561301264 its reverse (46210316530002), we get a palindrome (66213877831266).

The spelling of 20003561301264 in words is "twenty trillion, three billion, five hundred sixty-one million, three hundred one thousand, two hundred sixty-four".