20061273197 has 4 divisors (see below), whose sum is σ = 22927169376. Its totient is φ = 17195377020.

The previous prime is 20061273173. The next prime is 20061273203. The reversal of 20061273197 is 79137216002.

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 20061273197 - 2⁸ = 20061272941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20061273197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20081273197) 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, 1432948079 + ... + 1432948092.

It is an arithmetic number, because the mean of its divisors is an integer number (5731792344).

Almost surely, 2^20061273197 is an apocalyptic number.

It is an amenable number.

20061273197 is a deficient number, since it is larger than the sum of its proper divisors (2865896179).

20061273197 is an equidigital number, since it uses as much as digits as its factorization.

20061273197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865896178.

The product of its (nonzero) digits is 31752, while the sum is 38.

Adding to 20061273197 its reverse (79137216002), we get a palindrome (99198489199).

The spelling of 20061273197 in words is "twenty billion, sixty-one million, two hundred seventy-three thousand, one hundred ninety-seven".