71166813351751 has 4 divisors (see below), whose sum is σ = 76641183609592. Its totient is φ = 65692443093912.

The previous prime is 71166813351701. The next prime is 71166813351787. The reversal of 71166813351751 is 15715331866117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71166813351751 - 2¹³ = 71166813343559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71166813351692 and 71166813351701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71166813351701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737185128901 + ... + 2737185128926.

It is an arithmetic number, because the mean of its divisors is an integer number (19160295902398).

Almost surely, 2^{71166813351751} is an apocalyptic number.

71166813351751 is a deficient number, since it is larger than the sum of its proper divisors (5474370257841).

71166813351751 is a wasteful number, since it uses less digits than its factorization.

71166813351751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474370257840.

The product of its digits is 3175200, while the sum is 55.

The spelling of 71166813351751 in words is "seventy-one trillion, one hundred sixty-six billion, eight hundred thirteen million, three hundred fifty-one thousand, seven hundred fifty-one".