402560140444 has 96 divisors (see below), whose sum is σ = 900064037376. Its totient is φ = 152991770880.

The previous prime is 402560140439. The next prime is 402560140453. The reversal of 402560140444 is 444041065204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2752779 + ... + 2895325.

It is an arithmetic number, because the mean of its divisors is an integer number (9375667056).

Almost surely, 2^402560140444 is an apocalyptic number.

402560140444 is a gapful number since it is divisible by the number (44) 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 402560140444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450032018688).

402560140444 is an abundant number, since it is smaller than the sum of its proper divisors (497503896932).

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

402560140444 is a wasteful number, since it uses less digits than its factorization.

402560140444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142795 (or 142793 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

The spelling of 402560140444 in words is "four hundred two billion, five hundred sixty million, one hundred forty thousand, four hundred forty-four".