43251112006321 has 4 divisors (see below), whose sum is σ = 43251154679872. Its totient is φ = 43251069332772.

The previous prime is 43251112006309. The next prime is 43251112006331. The reversal of 43251112006321 is 12360021115234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43251112006321 - 2²⁹ = 43250575135409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43251112006331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19778541 + ... + 21856186.

It is an arithmetic number, because the mean of its divisors is an integer number (10812788669968).

Almost surely, 2^{43251112006321} is an apocalyptic number.

It is an amenable number.

43251112006321 is a deficient number, since it is larger than the sum of its proper divisors (42673551).

43251112006321 is a wasteful number, since it uses less digits than its factorization.

43251112006321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42673550.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 43251112006321 in words is "forty-three trillion, two hundred fifty-one billion, one hundred twelve million, six thousand, three hundred twenty-one".