20144503426775 has 24 divisors (see below), whose sum is σ = 30743611387104. Its totient is φ = 12750806563200.

The previous prime is 20144503426763. The next prime is 20144503426781. The reversal of 20144503426775 is 57762430544102.

It is not a de Polignac number, because 20144503426775 - 2¹⁰ = 20144503425751 is a prime.

It is a super-2 number, since 2×20144503426775² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4427361116 + ... + 4427365665.

It is an arithmetic number, because the mean of its divisors is an integer number (1280983807796).

Almost surely, 2^{20144503426775} is an apocalyptic number.

20144503426775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20144503426775 is a deficient number, since it is larger than the sum of its proper divisors (10599107960329).

20144503426775 is a wasteful number, since it uses less digits than its factorization.

20144503426775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8854726811 (or 8854726806 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 50.

The spelling of 20144503426775 in words is "twenty trillion, one hundred forty-four billion, five hundred three million, four hundred twenty-six thousand, seven hundred seventy-five".