71219075746691 has 4 divisors (see below), whose sum is σ = 71223426613800. Its totient is φ = 71214724879584.

The previous prime is 71219075746673. The next prime is 71219075746717. The reversal of 71219075746691 is 19664757091217.

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 71219075746691 - 2¹⁰ = 71219075745667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71219075742691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175409001 + ... + 2175441738.

It is an arithmetic number, because the mean of its divisors is an integer number (17805856653450).

Almost surely, 2^{71219075746691} is an apocalyptic number.

71219075746691 is a deficient number, since it is larger than the sum of its proper divisors (4350867109).

71219075746691 is a wasteful number, since it uses less digits than its factorization.

71219075746691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350867108.

The product of its (nonzero) digits is 40007520, while the sum is 65.

The spelling of 71219075746691 in words is "seventy-one trillion, two hundred nineteen billion, seventy-five million, seven hundred forty-six thousand, six hundred ninety-one".