400045037012 has 24 divisors (see below), whose sum is σ = 746253244800. Its totient is φ = 187096343616.

The previous prime is 400045036981. The next prime is 400045037057. The reversal of 400045037012 is 210730540004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33308873 + ... + 33320880.

It is an arithmetic number, because the mean of its divisors is an integer number (31093885200).

Almost surely, 2^400045037012 is an apocalyptic number.

It is an amenable number.

400045037012 is a deficient number, since it is larger than the sum of its proper divisors (346208207788).

400045037012 is a wasteful number, since it uses less digits than its factorization.

400045037012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66629855 (or 66629853 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

Adding to 400045037012 its reverse (210730540004), we get a palindrome (610775577016).

The spelling of 400045037012 in words is "four hundred billion, forty-five million, thirty-seven thousand, twelve".