400052204128 has 48 divisors (see below), whose sum is σ = 804493638144. Its totient is φ = 195737772160.

The previous prime is 400052204053. The next prime is 400052204143. The reversal of 400052204128 is 821402250004.

It is a junction number, because it is equal to n+sod(n) for n = 400052204096 and 400052204105.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 10826901 + ... + 10863787.

It is an arithmetic number, because the mean of its divisors is an integer number (16760284128).

Almost surely, 2^400052204128 is an apocalyptic number.

It is an amenable number.

400052204128 is an abundant number, since it is smaller than the sum of its proper divisors (404441434016).

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

400052204128 is a wasteful number, since it uses less digits than its factorization.

400052204128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44155 (or 44147 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The spelling of 400052204128 in words is "four hundred billion, fifty-two million, two hundred four thousand, one hundred twenty-eight".