20144512612305 has 32 divisors (see below), whose sum is σ = 35982194248320. Its totient is φ = 10692821845440.

The previous prime is 20144512612291. The next prime is 20144512612307. The reversal of 20144512612305 is 50321621544102.

20144512612305 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 4 + 5 + 1 + 2 + 612 + 30 + 5 = 666.

It is not a de Polignac number, because 20144512612305 - 2⁹ = 20144512611793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20144512612305.

It is not an unprimeable number, because it can be changed into a prime (20144512612307) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 353570122 + ... + 353627091.

It is an arithmetic number, because the mean of its divisors is an integer number (1124443570260).

Almost surely, 2^{20144512612305} is an apocalyptic number.

It is an amenable number.

20144512612305 is a deficient number, since it is larger than the sum of its proper divisors (15837681636015).

20144512612305 is a wasteful number, since it uses less digits than its factorization.

20144512612305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707197438 (or 707197432 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 20144512612305 in words is "twenty trillion, one hundred forty-four billion, five hundred twelve million, six hundred twelve thousand, three hundred five".