400450225313212 has 48 divisors (see below), whose sum is σ = 756497610473472. Its totient is φ = 184936056877440.

The previous prime is 400450225313209. The next prime is 400450225313261. The reversal of 400450225313212 is 212313522054004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152318428 + ... + 154925155.

It is an arithmetic number, because the mean of its divisors is an integer number (15760366884864).

Almost surely, 2^{400450225313212} is an apocalyptic number.

It is an amenable number.

400450225313212 is a deficient number, since it is larger than the sum of its proper divisors (356047385160260).

400450225313212 is a wasteful number, since it uses less digits than its factorization.

400450225313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307244098 (or 307244096 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 400450225313212 its reverse (212313522054004), we get a palindrome (612763747367216).

The spelling of 400450225313212 in words is "four hundred trillion, four hundred fifty billion, two hundred twenty-five million, three hundred thirteen thousand, two hundred twelve".