71736762869 has 2 divisors, whose sum is σ = 71736762870. Its totient is φ = 71736762868.

The previous prime is 71736762859. The next prime is 71736762871. The reversal of 71736762869 is 96826763717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67437337969 + 4299424900 = 259687^2 + 65570^2 .

It is an emirp because it is prime and its reverse (96826763717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71736762869 - 2⁸ = 71736762613 is a prime.

It is a super-2 number, since 2×71736762869² (a number of 23 digits) contains 22 as substring.

Together with 71736762871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71736762829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35868381434 + 35868381435.

It is an arithmetic number, because the mean of its divisors is an integer number (35868381435).

Almost surely, 2^71736762869 is an apocalyptic number.

It is an amenable number.

71736762869 is a deficient number, since it is larger than the sum of its proper divisors (1).

71736762869 is an equidigital number, since it uses as much as digits as its factorization.

71736762869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32006016, while the sum is 62.

The spelling of 71736762869 in words is "seventy-one billion, seven hundred thirty-six million, seven hundred sixty-two thousand, eight hundred sixty-nine".