400452056412 has 48 divisors (see below), whose sum is σ = 945072334080. Its totient is φ = 131958293632.

The previous prime is 400452056377. The next prime is 400452056419. The reversal of 400452056412 is 214650254004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400452056419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5847433 + ... + 5915519.

It is an arithmetic number, because the mean of its divisors is an integer number (19689006960).

Almost surely, 2^400452056412 is an apocalyptic number.

It is an amenable number.

400452056412 is an abundant number, since it is smaller than the sum of its proper divisors (544620277668).

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

400452056412 is a wasteful number, since it uses less digits than its factorization.

400452056412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73690 (or 73688 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The spelling of 400452056412 in words is "four hundred billion, four hundred fifty-two million, fifty-six thousand, four hundred twelve".