402845640008 has 96 divisors (see below), whose sum is σ = 905563058400. Its totient is φ = 167418897408.

The previous prime is 402845639981. The next prime is 402845640023. The reversal of 402845640008 is 800046548204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2257016 + ... + 2428952.

It is an arithmetic number, because the mean of its divisors is an integer number (9432948525).

Almost surely, 2^402845640008 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 402845640008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452781529200).

402845640008 is an abundant number, since it is smaller than the sum of its proper divisors (502717418392).

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

402845640008 is a wasteful number, since it uses less digits than its factorization.

402845640008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172139 (or 172128 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 41.

The spelling of 402845640008 in words is "four hundred two billion, eight hundred forty-five million, six hundred forty thousand, eight".