20392580398 has 4 divisors (see below), whose sum is σ = 30588870600. Its totient is φ = 10196290198.

The previous prime is 20392580393. The next prime is 20392580407. The reversal of 20392580398 is 89308529302.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20392580393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5098145098 + ... + 5098145101.

It is an arithmetic number, because the mean of its divisors is an integer number (7647217650).

Almost surely, 2^20392580398 is an apocalyptic number.

20392580398 is a deficient number, since it is larger than the sum of its proper divisors (10196290202).

20392580398 is a wasteful number, since it uses less digits than its factorization.

20392580398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196290201.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 20392580398 in words is "twenty billion, three hundred ninety-two million, five hundred eighty thousand, three hundred ninety-eight".