43751411614021 has 2 divisors, whose sum is σ = 43751411614022. Its totient is φ = 43751411614020.

The previous prime is 43751411614013. The next prime is 43751411614091. The reversal of 43751411614021 is 12041611415734.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40856564583396 + 2894847030625 = 6391914^2 + 1701425^2 .

It is a cyclic number.

It is not a de Polignac number, because 43751411614021 - 2³ = 43751411614013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43751411614091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21875705807010 + 21875705807011.

It is an arithmetic number, because the mean of its divisors is an integer number (21875705807011).

Almost surely, 2^{43751411614021} is an apocalyptic number.

It is an amenable number.

43751411614021 is a deficient number, since it is larger than the sum of its proper divisors (1).

43751411614021 is an equidigital number, since it uses as much as digits as its factorization.

43751411614021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 43751411614021 in words is "forty-three trillion, seven hundred fifty-one billion, four hundred eleven million, six hundred fourteen thousand, twenty-one".