201946421923159 has 2 divisors, whose sum is σ = 201946421923160. Its totient is φ = 201946421923158.

The previous prime is 201946421923117. The next prime is 201946421923237. The reversal of 201946421923159 is 951329124649102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201946421923159 - 2⁷ = 201946421923031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201946421923109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100973210961579 + 100973210961580.

It is an arithmetic number, because the mean of its divisors is an integer number (100973210961580).

Almost surely, 2^{201946421923159} is an apocalyptic number.

201946421923159 is a deficient number, since it is larger than the sum of its proper divisors (1).

201946421923159 is an equidigital number, since it uses as much as digits as its factorization.

201946421923159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 201946421923159 in words is "two hundred one trillion, nine hundred forty-six billion, four hundred twenty-one million, nine hundred twenty-three thousand, one hundred fifty-nine".