20001836883838 has 16 divisors (see below), whose sum is σ = 31307403962016. Its totient is φ = 9566040591360.

The previous prime is 20001836883767. The next prime is 20001836883841. The reversal of 20001836883838 is 83838863810002.

It is a super-2 number, since 2×20001836883838² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7431070 + ... + 9758302.

It is an arithmetic number, because the mean of its divisors is an integer number (1956712747626).

Almost surely, 2^{20001836883838} is an apocalyptic number.

20001836883838 is a deficient number, since it is larger than the sum of its proper divisors (11305567078178).

20001836883838 is a wasteful number, since it uses less digits than its factorization.

20001836883838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514099.

The product of its (nonzero) digits is 10616832, while the sum is 58.

The spelling of 20001836883838 in words is "twenty trillion, one billion, eight hundred thirty-six million, eight hundred eighty-three thousand, eight hundred thirty-eight".