20195133197 has 8 divisors (see below), whose sum is σ = 20638355040. Its totient is φ = 19754214480.

The previous prime is 20195133181. The next prime is 20195133239. The reversal of 20195133197 is 79133159102.

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 20195133197 - 2⁴ = 20195133181 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 (20195133397) 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, 558047 + ... + 593132.

It is an arithmetic number, because the mean of its divisors is an integer number (2579794380).

Almost surely, 2^20195133197 is an apocalyptic number.

It is an amenable number.

20195133197 is a deficient number, since it is larger than the sum of its proper divisors (443221843).

20195133197 is a wasteful number, since it uses less digits than its factorization.

20195133197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151563.

The product of its (nonzero) digits is 51030, while the sum is 41.

The spelling of 20195133197 in words is "twenty billion, one hundred ninety-five million, one hundred thirty-three thousand, one hundred ninety-seven".