71842719619 has 4 divisors (see below), whose sum is σ = 78373875960. Its totient is φ = 65311563280.

The previous prime is 71842719607. The next prime is 71842719623. The reversal of 71842719619 is 91691724817.

It is a happy number.

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 71842719619 - 2¹⁹ = 71842195331 is a prime.

It is a super-2 number, since 2×71842719619² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71842719619.

It is not an unprimeable number, because it can be changed into a prime (71842719629) 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 3 ways as a sum of consecutive naturals, for example, 3265578154 + ... + 3265578175.

It is an arithmetic number, because the mean of its divisors is an integer number (19593468990).

Almost surely, 2^71842719619 is an apocalyptic number.

71842719619 is a deficient number, since it is larger than the sum of its proper divisors (6531156341).

71842719619 is a wasteful number, since it uses less digits than its factorization.

71842719619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6531156340.

The product of its digits is 1524096, while the sum is 55.

The spelling of 71842719619 in words is "seventy-one billion, eight hundred forty-two million, seven hundred nineteen thousand, six hundred nineteen".