32400402212 has 6 divisors (see below), whose sum is σ = 56700703878. Its totient is φ = 16200201104.

The previous prime is 32400402211. The next prime is 32400402217. The reversal of 32400402212 is 21220400423.

It can be written as a sum of positive squares in only one way, i.e., 28704491776 + 3695910436 = 169424^2 + 60794^2 .

It is not an unprimeable number, because it can be changed into a prime (32400402211) by changing a digit.

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 as a sum of consecutive naturals, namely, 4050050273 + ... + 4050050280.

It is an arithmetic number, because the mean of its divisors is an integer number (9450117313).

Almost surely, 2^32400402212 is an apocalyptic number.

It is an amenable number.

32400402212 is a deficient number, since it is larger than the sum of its proper divisors (24300301666).

32400402212 is a wasteful number, since it uses less digits than its factorization.

32400402212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8100100557 (or 8100100555 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 32400402212 its reverse (21220400423), we get a palindrome (53620802635).

The spelling of 32400402212 in words is "thirty-two billion, four hundred million, four hundred two thousand, two hundred twelve".