400845805764 has 12 divisors (see below), whose sum is σ = 935306880144. Its totient is φ = 133615268584.

The previous prime is 400845805741. The next prime is 400845805771. The reversal of 400845805764 is 467508548004.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16701908562 + ... + 16701908585.

It is an arithmetic number, because the mean of its divisors is an integer number (77942240012).

Almost surely, 2^400845805764 is an apocalyptic number.

It is an amenable number.

400845805764 is an abundant number, since it is smaller than the sum of its proper divisors (534461074380).

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

400845805764 is a wasteful number, since it uses less digits than its factorization.

400845805764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33403817154 (or 33403817152 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 51.

The spelling of 400845805764 in words is "four hundred billion, eight hundred forty-five million, eight hundred five thousand, seven hundred sixty-four".