402755445824 has 28 divisors (see below), whose sum is σ = 810166036764. Its totient is φ = 198619121664.

The previous prime is 402755445769. The next prime is 402755445857. The reversal of 402755445824 is 428544557204.

It can be written as a sum of positive squares in 2 ways, for example, as 307323879424 + 95431566400 = 554368^2 + 308920^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43098437 + ... + 43107780.

It is an arithmetic number, because the mean of its divisors is an integer number (28934501313).

Almost surely, 2^402755445824 is an apocalyptic number.

It is an amenable number.

402755445824 is an abundant number, since it is smaller than the sum of its proper divisors (407410590940).

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

402755445824 is an equidigital number, since it uses as much as digits as its factorization.

402755445824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86206302 (or 86206292 counting only the distinct ones).

The product of its (nonzero) digits is 7168000, while the sum is 50.

The spelling of 402755445824 in words is "four hundred two billion, seven hundred fifty-five million, four hundred forty-five thousand, eight hundred twenty-four".