20001405143345 has 16 divisors (see below), whose sum is σ = 24134125893120. Its totient is φ = 15913073868864.

The previous prime is 20001405143333. The next prime is 20001405143353. The reversal of 20001405143345 is 54334150410002.

It is a cyclic number.

It is not a de Polignac number, because 20001405143345 - 2³⁶ = 19932685666609 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 14522222 + ... + 15839751.

It is an arithmetic number, because the mean of its divisors is an integer number (1508382868320).

Almost surely, 2^{20001405143345} is an apocalyptic number.

It is an amenable number.

20001405143345 is a deficient number, since it is larger than the sum of its proper divisors (4132720749775).

20001405143345 is a wasteful number, since it uses less digits than its factorization.

20001405143345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30362704.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 20001405143345 its reverse (54334150410002), we get a palindrome (74335555553347).

The spelling of 20001405143345 in words is "twenty trillion, one billion, four hundred five million, one hundred forty-three thousand, three hundred forty-five".