429378646873901 has 2 divisors, whose sum is σ = 429378646873902. Its totient is φ = 429378646873900.

The previous prime is 429378646873879. The next prime is 429378646873993. The reversal of 429378646873901 is 109378646873924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411455057766025 + 17923589107876 = 20284355^2 + 4233626^2 .

It is a cyclic number.

It is not a de Polignac number, because 429378646873901 - 2⁶ = 429378646873837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (429378646473901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214689323436950 + 214689323436951.

It is an arithmetic number, because the mean of its divisors is an integer number (214689323436951).

Almost surely, 2^{429378646873901} is an apocalyptic number.

It is an amenable number.

429378646873901 is a deficient number, since it is larger than the sum of its proper divisors (1).

429378646873901 is an equidigital number, since it uses as much as digits as its factorization.

429378646873901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2633637888, while the sum is 77.

The spelling of 429378646873901 in words is "four hundred twenty-nine trillion, three hundred seventy-eight billion, six hundred forty-six million, eight hundred seventy-three thousand, nine hundred one".