65731780463 has 2 divisors, whose sum is σ = 65731780464. Its totient is φ = 65731780462.

The previous prime is 65731780447. The next prime is 65731780489. The reversal of 65731780463 is 36408713756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65731780463 - 2⁴ = 65731780447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65731780493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32865890231 + 32865890232.

It is an arithmetic number, because the mean of its divisors is an integer number (32865890232).

Almost surely, 2^65731780463 is an apocalyptic number.

65731780463 is a deficient number, since it is larger than the sum of its proper divisors (1).

65731780463 is an equidigital number, since it uses as much as digits as its factorization.

65731780463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 65731780463 in words is "sixty-five billion, seven hundred thirty-one million, seven hundred eighty thousand, four hundred sixty-three".