20468578097 has 4 divisors (see below), whose sum is σ = 22329357936. Its totient is φ = 18607798260.

The previous prime is 20468578079. The next prime is 20468578147. The reversal of 20468578097 is 79087586402.

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.

It is a cyclic number.

It is not a de Polignac number, because 20468578097 - 2¹² = 20468574001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20468578997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930389903 + ... + 930389924.

It is an arithmetic number, because the mean of its divisors is an integer number (5582339484).

Almost surely, 2^20468578097 is an apocalyptic number.

It is an amenable number.

20468578097 is a deficient number, since it is larger than the sum of its proper divisors (1860779839).

20468578097 is a wasteful number, since it uses less digits than its factorization.

20468578097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860779838.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 20468578097 in words is "twenty billion, four hundred sixty-eight million, five hundred seventy-eight thousand, ninety-seven".