20459703097 has 4 divisors (see below), whose sum is σ = 20459998336. Its totient is φ = 20459407860.

The previous prime is 20459703083. The next prime is 20459703119. The reversal of 20459703097 is 79030795402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20459703097 - 2¹⁹ = 20459178809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20459703067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19072 + ... + 203182.

It is an arithmetic number, because the mean of its divisors is an integer number (5114999584).

Almost surely, 2^20459703097 is an apocalyptic number.

It is an amenable number.

20459703097 is a deficient number, since it is larger than the sum of its proper divisors (295239).

20459703097 is a wasteful number, since it uses less digits than its factorization.

20459703097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295238.

The product of its (nonzero) digits is 476280, while the sum is 46.

The spelling of 20459703097 in words is "twenty billion, four hundred fifty-nine million, seven hundred three thousand, ninety-seven".