4332721306897 has 2 divisors, whose sum is σ = 4332721306898. Its totient is φ = 4332721306896.

The previous prime is 4332721306877. The next prime is 4332721306909. The reversal of 4332721306897 is 7986031272334.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2959514664976 + 1373206641921 = 1720324^2 + 1171839^2 .

It is a cyclic number.

It is not a de Polignac number, because 4332721306897 - 2³¹ = 4330573823249 is a prime.

It is not a weakly prime, because it can be changed into another prime (4332721306817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2166360653448 + 2166360653449.

It is an arithmetic number, because the mean of its divisors is an integer number (2166360653449).

Almost surely, 2^{4332721306897} is an apocalyptic number.

It is an amenable number.

4332721306897 is a deficient number, since it is larger than the sum of its proper divisors (1).

4332721306897 is an equidigital number, since it uses as much as digits as its factorization.

4332721306897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 4332721306897 in words is "four trillion, three hundred thirty-two billion, seven hundred twenty-one million, three hundred six thousand, eight hundred ninety-seven".