20338045492838 has 8 divisors (see below), whose sum is σ = 30683409674688. Its totient is φ = 10110242267944.

The previous prime is 20338045492823. The next prime is 20338045492847. The reversal of 20338045492838 is 83829454083302.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29390238806 + ... + 29390239497.

It is an arithmetic number, because the mean of its divisors is an integer number (3835426209336).

Almost surely, 2^{20338045492838} is an apocalyptic number.

20338045492838 is a deficient number, since it is larger than the sum of its proper divisors (10345364181850).

20338045492838 is a wasteful number, since it uses less digits than its factorization.

20338045492838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58780478478.

The product of its (nonzero) digits is 39813120, while the sum is 59.

The spelling of 20338045492838 in words is "twenty trillion, three hundred thirty-eight billion, forty-five million, four hundred ninety-two thousand, eight hundred thirty-eight".