20338944801 has 16 divisors (see below), whose sum is σ = 32623872000. Its totient is φ = 11010556368.

The previous prime is 20338944797. The next prime is 20338944809. The reversal of 20338944801 is 10844983302.

It is not a de Polignac number, because 20338944801 - 2² = 20338944797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20338944809) by changing a digit.

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, 25487001 + ... + 25487798.

It is an arithmetic number, because the mean of its divisors is an integer number (2038992000).

Almost surely, 2^20338944801 is an apocalyptic number.

20338944801 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20338944801 is a deficient number, since it is larger than the sum of its proper divisors (12284927199).

20338944801 is a wasteful number, since it uses less digits than its factorization.

20338944801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50974828.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 20338944801 in words is "twenty billion, three hundred thirty-eight million, nine hundred forty-four thousand, eight hundred one".