20464144100426 has 32 divisors (see below), whose sum is σ = 36208986463440. Its totient is φ = 8582870854656.

The previous prime is 20464144100369. The next prime is 20464144100437. The reversal of 20464144100426 is 62400144146402.

It can be written as a sum of positive squares in 8 ways, for example, as 14821737709801 + 5642406390625 = 3849901^2 + 2375375^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20464144100426.

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 15 ways as a sum of consecutive naturals, for example, 798245261 + ... + 798270896.

Almost surely, 2^{20464144100426} is an apocalyptic number.

20464144100426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20464144100426 is a deficient number, since it is larger than the sum of its proper divisors (15744842363014).

20464144100426 is a wasteful number, since it uses less digits than its factorization.

20464144100426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596516218.

The product of its (nonzero) digits is 147456, while the sum is 38.

Adding to 20464144100426 its reverse (62400144146402), we get a palindrome (82864288246828).

The spelling of 20464144100426 in words is "twenty trillion, four hundred sixty-four billion, one hundred forty-four million, one hundred thousand, four hundred twenty-six".