71267772067 has 2 divisors, whose sum is σ = 71267772068. Its totient is φ = 71267772066.

The previous prime is 71267772047. The next prime is 71267772077. The reversal of 71267772067 is 76027776217.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71267772067 - 2¹⁵ = 71267739299 is a prime.

It is not a weakly prime, because it can be changed into another prime (71267772007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35633886033 + 35633886034.

It is an arithmetic number, because the mean of its divisors is an integer number (35633886034).

Almost surely, 2^71267772067 is an apocalyptic number.

71267772067 is a deficient number, since it is larger than the sum of its proper divisors (1).

71267772067 is an equidigital number, since it uses as much as digits as its factorization.

71267772067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2420208, while the sum is 52.

The spelling of 71267772067 in words is "seventy-one billion, two hundred sixty-seven million, seven hundred seventy-two thousand, sixty-seven".