429378646873923 has 12 divisors (see below), whose sum is σ = 620243314989480. Its totient is φ = 286238717118816.

The previous prime is 429378646873901. The next prime is 429378646873993. The reversal of 429378646873923 is 329378646873924.

429378646873923 is a `hidden beast` number, since 4 + 2 + 9 + 3 + 7 + 86 + 468 + 73 + 9 + 2 + 3 = 666.

It is not a de Polignac number, because 429378646873923 - 2⁹ = 429378646873411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (429378646873993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1142645913 + ... + 1143021626.

It is an arithmetic number, because the mean of its divisors is an integer number (51686942915790).

Almost surely, 2^{429378646873923} is an apocalyptic number.

429378646873923 is a deficient number, since it is larger than the sum of its proper divisors (190864668115557).

429378646873923 is a wasteful number, since it uses less digits than its factorization.

429378646873923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285688418 (or 2285688415 counting only the distinct ones).

The product of its digits is 15801827328, while the sum is 81.

Subtracting from 429378646873923 its reverse (329378646873924), we obtain a palindrome (99999999999999).

The spelling of 429378646873923 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 twenty-three".