20803393823 has 8 divisors (see below), whose sum is σ = 21305849136. Its totient is φ = 20306145600.

The previous prime is 20803393811. The next prime is 20803393879. The reversal of 20803393823 is 32839330802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20803393823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20803393883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1293686 + ... + 1309667.

It is an arithmetic number, because the mean of its divisors is an integer number (2663231142).

Almost surely, 2^20803393823 is an apocalyptic number.

20803393823 is a deficient number, since it is larger than the sum of its proper divisors (502455313).

20803393823 is a wasteful number, since it uses less digits than its factorization.

20803393823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603545.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 20803393823 in words is "twenty billion, eight hundred three million, three hundred ninety-three thousand, eight hundred twenty-three".