43212612252605 has 64 divisors (see below), whose sum is σ = 56937057945600. Its totient is φ = 31361312194560.

The previous prime is 43212612252571. The next prime is 43212612252631. The reversal of 43212612252605 is 50625221621234.

It is a de Polignac number, because none of the positive numbers 2^k-43212612252605 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1906231211 + ... + 1906253879.

It is an arithmetic number, because the mean of its divisors is an integer number (889641530400).

Almost surely, 2^{43212612252605} is an apocalyptic number.

It is an amenable number.

43212612252605 is a deficient number, since it is larger than the sum of its proper divisors (13724445692995).

43212612252605 is a wasteful number, since it uses less digits than its factorization.

43212612252605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29494.

The product of its (nonzero) digits is 345600, while the sum is 41.

Adding to 43212612252605 its reverse (50625221621234), we get a palindrome (93837833873839).

The spelling of 43212612252605 in words is "forty-three trillion, two hundred twelve billion, six hundred twelve million, two hundred fifty-two thousand, six hundred five".