20460163197 has 8 divisors (see below), whose sum is σ = 27343222144. Its totient is φ = 13608606528.

The previous prime is 20460163189. The next prime is 20460163231. The reversal of 20460163197 is 79136106402.

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

It is not a de Polignac number, because 20460163197 - 2³ = 20460163189 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 (20460163117) 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, 7874053 + ... + 7876650.

It is an arithmetic number, because the mean of its divisors is an integer number (3417902768).

Almost surely, 2^20460163197 is an apocalyptic number.

It is an amenable number.

20460163197 is a deficient number, since it is larger than the sum of its proper divisors (6883058947).

20460163197 is a wasteful number, since it uses less digits than its factorization.

20460163197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15751139.

The product of its (nonzero) digits is 54432, while the sum is 39.

Adding to 20460163197 its reverse (79136106402), we get a palindrome (99596269599).

The spelling of 20460163197 in words is "twenty billion, four hundred sixty million, one hundred sixty-three thousand, one hundred ninety-seven".