65767642231 has 2 divisors, whose sum is σ = 65767642232. Its totient is φ = 65767642230.

The previous prime is 65767642211. The next prime is 65767642243. The reversal of 65767642231 is 13224676756.

65767642231 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 not a de Polignac number, because 65767642231 - 2²⁷ = 65633424503 is a prime.

It is a super-2 number, since 2×65767642231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65767642211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32883821115 + 32883821116.

It is an arithmetic number, because the mean of its divisors is an integer number (32883821116).

Almost surely, 2^65767642231 is an apocalyptic number.

65767642231 is a deficient number, since it is larger than the sum of its proper divisors (1).

65767642231 is an equidigital number, since it uses as much as digits as its factorization.

65767642231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 49.

The spelling of 65767642231 in words is "sixty-five billion, seven hundred sixty-seven million, six hundred forty-two thousand, two hundred thirty-one".