20001335613005 has 16 divisors (see below), whose sum is σ = 24226500081600. Its totient is φ = 15851144128512.

The previous prime is 20001335612939. The next prime is 20001335613023. The reversal of 20001335613005 is 50031653310002.

It is a cyclic number.

It is not a de Polignac number, because 20001335613005 - 2²² = 20001331418701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22923962 + ... + 23780468.

It is an arithmetic number, because the mean of its divisors is an integer number (1514156255100).

Almost surely, 2^{20001335613005} is an apocalyptic number.

It is an amenable number.

20001335613005 is a deficient number, since it is larger than the sum of its proper divisors (4225164468595).

20001335613005 is a wasteful number, since it uses less digits than its factorization.

20001335613005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900268.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 20001335613005 its reverse (50031653310002), we get a palindrome (70032988923007).

The spelling of 20001335613005 in words is "twenty trillion, one billion, three hundred thirty-five million, six hundred thirteen thousand, five".