400205052123312 has 40 divisors (see below), whose sum is σ = 1033913990577456. Its totient is φ = 133395111233536.

The previous prime is 400205052123311. The next prime is 400205052123407. The reversal of 400205052123312 is 213321250502004.

It is a self number, because there is not a number n which added to its sum of digits gives 400205052123312.

It is not an unprimeable number, because it can be changed into a prime (400205052123311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204415833 + ... + 206364344.

Almost surely, 2^{400205052123312} is an apocalyptic number.

It is an amenable number.

400205052123312 is an abundant number, since it is smaller than the sum of its proper divisors (633708938454144).

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

400205052123312 is a wasteful number, since it uses less digits than its factorization.

400205052123312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410800485 (or 410800479 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 400205052123312 in words is "four hundred trillion, two hundred five billion, fifty-two million, one hundred twenty-three thousand, three hundred twelve".