423068921856 has 1248 divisors, whose sum is σ = 1596492738560. Its totient is φ = 108291686400.

The previous prime is 423068921851. The next prime is 423068921857. The reversal of 423068921856 is 658129860324.

423068921856 is a `hidden beast` number, since 42 + 306 + 89 + 218 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423068921851) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6935556066 + ... + 6935556126.

Almost surely, 2^423068921856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423068921856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798246369280).

423068921856 is an abundant number, since it is smaller than the sum of its proper divisors (1173423816704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423068921856 is a wasteful number, since it uses less digits than its factorization.

423068921856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 423068921856 in words is "four hundred twenty-three billion, sixty-eight million, nine hundred twenty-one thousand, eight hundred fifty-six".