86444430073 has 2 divisors, whose sum is σ = 86444430074. Its totient is φ = 86444430072.

The previous prime is 86444430043. The next prime is 86444430077. The reversal of 86444430073 is 37003444468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59991684624 + 26452745449 = 244932^2 + 162643^2 .

It is a cyclic number.

It is not a de Polignac number, because 86444430073 - 2²⁵ = 86410875641 is a prime.

It is not a weakly prime, because it can be changed into another prime (86444430077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43222215036 + 43222215037.

It is an arithmetic number, because the mean of its divisors is an integer number (43222215037).

Almost surely, 2^86444430073 is an apocalyptic number.

It is an amenable number.

86444430073 is a deficient number, since it is larger than the sum of its proper divisors (1).

86444430073 is an equidigital number, since it uses as much as digits as its factorization.

86444430073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 43.

The spelling of 86444430073 in words is "eighty-six billion, four hundred forty-four million, four hundred thirty thousand, seventy-three".