402002445231450 has 288 divisors, whose sum is σ = 1263649999497600. Its totient is φ = 89706357135360.

The previous prime is 402002445231433. The next prime is 402002445231451. The reversal of 402002445231450 is 54132544200204.

402002445231450 is a `hidden beast` number, since 4 + 0 + 2 + 0 + 0 + 244 + 52 + 314 + 50 = 666.

It is not an unprimeable number, because it can be changed into a prime (402002445231451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 282244686 + ... + 283665414.

Almost surely, 2^{402002445231450} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402002445231450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631824999748800).

402002445231450 is an abundant number, since it is smaller than the sum of its proper divisors (861647554266150).

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

402002445231450 is a wasteful number, since it uses less digits than its factorization.

402002445231450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422886 (or 1422878 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 402002445231450 its reverse (54132544200204), we get a palindrome (456134989431654).

The spelling of 402002445231450 in words is "four hundred two trillion, two billion, four hundred forty-five million, two hundred thirty-one thousand, four hundred fifty".