20350000366505 has 4 divisors (see below), whose sum is σ = 24420000439812. Its totient is φ = 16280000293200.

The previous prime is 20350000366477. The next prime is 20350000366519. The reversal of 20350000366505 is 50566300005302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4317768149776 + 16032232216729 = 2077924^2 + 4004027^2 .

It is not a de Polignac number, because 20350000366505 - 2²⁰ = 20349999317929 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035000036646 + ... + 2035000036655.

It is an arithmetic number, because the mean of its divisors is an integer number (6105000109953).

Almost surely, 2^{20350000366505} is an apocalyptic number.

It is an amenable number.

20350000366505 is a deficient number, since it is larger than the sum of its proper divisors (4070000073307).

20350000366505 is an equidigital number, since it uses as much as digits as its factorization.

20350000366505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070000073306.

The product of its (nonzero) digits is 81000, while the sum is 35.

The spelling of 20350000366505 in words is "twenty trillion, three hundred fifty billion, three hundred sixty-six thousand, five hundred five".