400432430012 has 12 divisors (see below), whose sum is σ = 724920778680. Its totient is φ = 193312207536.

The previous prime is 400432429997. The next prime is 400432430029. The reversal of 400432430012 is 210034234004.

It is a super-2 number, since 2×400432430012² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400432430012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1726001738 + ... + 1726001969.

It is an arithmetic number, because the mean of its divisors is an integer number (60410064890).

Almost surely, 2^400432430012 is an apocalyptic number.

It is an amenable number.

400432430012 is a deficient number, since it is larger than the sum of its proper divisors (324488348668).

400432430012 is a wasteful number, since it uses less digits than its factorization.

400432430012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452003740 (or 3452003738 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 400432430012 its reverse (210034234004), we get a palindrome (610466664016).

The spelling of 400432430012 in words is "four hundred billion, four hundred thirty-two million, four hundred thirty thousand, twelve".