71919706529 has 8 divisors (see below), whose sum is σ = 78475416672. Its totient is φ = 65366922240.

The previous prime is 71919706519. The next prime is 71919706559. The reversal of 71919706529 is 92560791917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71919706529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71919706519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679904 + ... + 778529.

It is an arithmetic number, because the mean of its divisors is an integer number (9809427084).

Almost surely, 2^71919706529 is an apocalyptic number.

It is an amenable number.

71919706529 is a deficient number, since it is larger than the sum of its proper divisors (6555710143).

71919706529 is a wasteful number, since it uses less digits than its factorization.

71919706529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462927.

The product of its (nonzero) digits is 2143260, while the sum is 56.

The spelling of 71919706529 in words is "seventy-one billion, nine hundred nineteen million, seven hundred six thousand, five hundred twenty-nine".