43451335052212 has 6 divisors (see below), whose sum is σ = 76039836341378. Its totient is φ = 21725667526104.

The previous prime is 43451335052117. The next prime is 43451335052219. The reversal of 43451335052212 is 21225053315434.

It can be written as a sum of positive squares in only one way, i.e., 30105786291876 + 13345548760336 = 5486874^2 + 3653156^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43451335052219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5431416881523 + ... + 5431416881530.

Almost surely, 2^{43451335052212} is an apocalyptic number.

It is an amenable number.

43451335052212 is a deficient number, since it is larger than the sum of its proper divisors (32588501289166).

43451335052212 is a wasteful number, since it uses less digits than its factorization.

43451335052212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10862833763057 (or 10862833763055 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 43451335052212 its reverse (21225053315434), we get a palindrome (64676388367646).

The spelling of 43451335052212 in words is "forty-three trillion, four hundred fifty-one billion, three hundred thirty-five million, fifty-two thousand, two hundred twelve".