20198172367 has 2 divisors, whose sum is σ = 20198172368. Its totient is φ = 20198172366.

The previous prime is 20198172359. The next prime is 20198172431. The reversal of 20198172367 is 76327189102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20198172367 - 2³ = 20198172359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20198172347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10099086183 + 10099086184.

It is an arithmetic number, because the mean of its divisors is an integer number (10099086184).

Almost surely, 2^20198172367 is an apocalyptic number.

20198172367 is a deficient number, since it is larger than the sum of its proper divisors (1).

20198172367 is an equidigital number, since it uses as much as digits as its factorization.

20198172367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 20198172367 in words is "twenty billion, one hundred ninety-eight million, one hundred seventy-two thousand, three hundred sixty-seven".