423961436160 has 672 divisors, whose sum is σ = 1583991272448. Its totient is φ = 104587591680.

The previous prime is 423961436159. The next prime is 423961436167. The reversal of 423961436160 is 61634169324.

423961436160 is a `hidden beast` number, since 4 + 2 + 396 + 143 + 61 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (423961436167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 262839514 + ... + 262841126.

Almost surely, 2^423961436160 is an apocalyptic number.

423961436160 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423961436160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791995636224).

423961436160 is an abundant number, since it is smaller than the sum of its proper divisors (1160029836288).

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

423961436160 is a wasteful number, since it uses less digits than its factorization.

423961436160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704 (or 1677 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 423961436160 in words is "four hundred twenty-three billion, nine hundred sixty-one million, four hundred thirty-six thousand, one hundred sixty".