65780132778007 has 2 divisors, whose sum is σ = 65780132778008. Its totient is φ = 65780132778006.

The previous prime is 65780132777993. The next prime is 65780132778013. The reversal of 65780132778007 is 70087723108756.

65780132778007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65780132778007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65780132778307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32890066389003 + 32890066389004.

It is an arithmetic number, because the mean of its divisors is an integer number (32890066389004).

Almost surely, 2^{65780132778007} is an apocalyptic number.

65780132778007 is a deficient number, since it is larger than the sum of its proper divisors (1).

65780132778007 is an equidigital number, since it uses as much as digits as its factorization.

65780132778007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27659520, while the sum is 61.

The spelling of 65780132778007 in words is "sixty-five trillion, seven hundred eighty billion, one hundred thirty-two million, seven hundred seventy-eight thousand, seven".