71761348247 has 2 divisors, whose sum is σ = 71761348248. Its totient is φ = 71761348246.

The previous prime is 71761348229. The next prime is 71761348249. The reversal of 71761348247 is 74284316717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71761348247 - 2²⁸ = 71492912791 is a prime.

It is a super-2 number, since 2×71761348247² (a number of 23 digits) contains 22 as substring.

Together with 71761348249, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71761348195 and 71761348204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71761348249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35880674123 + 35880674124.

It is an arithmetic number, because the mean of its divisors is an integer number (35880674124).

Almost surely, 2^71761348247 is an apocalyptic number.

71761348247 is a deficient number, since it is larger than the sum of its proper divisors (1).

71761348247 is an equidigital number, since it uses as much as digits as its factorization.

71761348247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1580544, while the sum is 50.

The spelling of 71761348247 in words is "seventy-one billion, seven hundred sixty-one million, three hundred forty-eight thousand, two hundred forty-seven".