20041761197 has 4 divisors (see below), whose sum is σ = 20468181696. Its totient is φ = 19615340700.

The previous prime is 20041761191. The next prime is 20041761199. The reversal of 20041761197 is 79116714002.

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 20041761197 - 2³² = 15746793901 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 20041761197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20041761191) 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, 213210179 + ... + 213210272.

It is an arithmetic number, because the mean of its divisors is an integer number (5117045424).

Almost surely, 2^20041761197 is an apocalyptic number.

It is an amenable number.

20041761197 is a deficient number, since it is larger than the sum of its proper divisors (426420499).

20041761197 is an equidigital number, since it uses as much as digits as its factorization.

20041761197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426420498.

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 20041761197 in words is "twenty billion, forty-one million, seven hundred sixty-one thousand, one hundred ninety-seven".