20398396097 has 8 divisors (see below), whose sum is σ = 20555937600. Its totient is φ = 20241405360.

The previous prime is 20398396049. The next prime is 20398396121. The reversal of 20398396097 is 79069389302.

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

It is a cyclic number.

It is not a de Polignac number, because 20398396097 - 2⁸ = 20398395841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20398396297) 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, 63179 + ... + 211632.

It is an arithmetic number, because the mean of its divisors is an integer number (2569492200).

Almost surely, 2^20398396097 is an apocalyptic number.

It is an amenable number.

20398396097 is a deficient number, since it is larger than the sum of its proper divisors (157541503).

20398396097 is a wasteful number, since it uses less digits than its factorization.

20398396097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275383.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 20398396097 in words is "twenty billion, three hundred ninety-eight million, three hundred ninety-six thousand, ninety-seven".