65780132778011 has 16 divisors (see below), whose sum is σ = 70104441496320. Its totient is φ = 61591758924960.

The previous prime is 65780132778007. The next prime is 65780132778013. The reversal of 65780132778011 is 11087723108756.

65780132778011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 65780132778011 - 2² = 65780132778007 is a prime.

It is a super-2 number, since 2×65780132778011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65780132778013) 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 in 15 ways as a sum of consecutive naturals, for example, 157855685 + ... + 158271846.

It is an arithmetic number, because the mean of its divisors is an integer number (4381527593520).

Almost surely, 2^{65780132778011} is an apocalyptic number.

65780132778011 is a deficient number, since it is larger than the sum of its proper divisors (4324308718309).

65780132778011 is a wasteful number, since it uses less digits than its factorization.

65780132778011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316127746.

The product of its (nonzero) digits is 3951360, while the sum is 56.

The spelling of 65780132778011 in words is "sixty-five trillion, seven hundred eighty billion, one hundred thirty-two million, seven hundred seventy-eight thousand, eleven".