20003623551605 has 8 divisors (see below), whose sum is σ = 24006507187200. Its totient is φ = 16001459557776.

The previous prime is 20003623551551. The next prime is 20003623551607. The reversal of 20003623551605 is 50615532630002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20003623551605 - 2⁸ = 20003623551349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003623551607) 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 7 ways as a sum of consecutive naturals, for example, 179849285 + ... + 179960474.

It is an arithmetic number, because the mean of its divisors is an integer number (3000813398400).

Almost surely, 2^{20003623551605} is an apocalyptic number.

It is an amenable number.

20003623551605 is a deficient number, since it is larger than the sum of its proper divisors (4002883635595).

20003623551605 is a wasteful number, since it uses less digits than its factorization.

20003623551605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359820883.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 20003623551605 in words is "twenty trillion, three billion, six hundred twenty-three million, five hundred fifty-one thousand, six hundred five".