65430642043493 has 2 divisors, whose sum is σ = 65430642043494. Its totient is φ = 65430642043492.

The previous prime is 65430642043457. The next prime is 65430642043523. The reversal of 65430642043493 is 39434024603456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51670823050564 + 13759818992929 = 7188242^2 + 3709423^2 .

It is a cyclic number.

It is not a de Polignac number, because 65430642043493 - 2¹⁴ = 65430642027109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65430642043693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32715321021746 + 32715321021747.

It is an arithmetic number, because the mean of its divisors is an integer number (32715321021747).

Almost surely, 2^{65430642043493} is an apocalyptic number.

It is an amenable number.

65430642043493 is a deficient number, since it is larger than the sum of its proper divisors (1).

65430642043493 is an equidigital number, since it uses as much as digits as its factorization.

65430642043493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22394880, while the sum is 53.

The spelling of 65430642043493 in words is "sixty-five trillion, four hundred thirty billion, six hundred forty-two million, forty-three thousand, four hundred ninety-three".