71218795749 has 16 divisors (see below), whose sum is σ = 100161492480. Its totient is φ = 44887912560.

The previous prime is 71218795741. The next prime is 71218795777. The reversal of 71218795749 is 94759781217.

It is not a de Polignac number, because 71218795749 - 2³ = 71218795741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71218795692 and 71218795701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71218795741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1255047 + ... + 1310564.

It is an arithmetic number, because the mean of its divisors is an integer number (6260093280).

Almost surely, 2^71218795749 is an apocalyptic number.

It is an amenable number.

71218795749 is a deficient number, since it is larger than the sum of its proper divisors (28942696731).

71218795749 is a wasteful number, since it uses less digits than its factorization.

71218795749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566120.

The product of its digits is 8890560, while the sum is 60.

The spelling of 71218795749 in words is "seventy-one billion, two hundred eighteen million, seven hundred ninety-five thousand, seven hundred forty-nine".