71739088517 has 8 divisors (see below), whose sum is σ = 74330480640. Its totient is φ = 69155538480.

The previous prime is 71739088453. The next prime is 71739088537. The reversal of 71739088517 is 71588093717.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 71739088517 - 2⁶ = 71739088453 is a prime.

It is a super-2 number, since 2×71739088517² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71739088537) 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, 1941893 + ... + 1978490.

It is an arithmetic number, because the mean of its divisors is an integer number (9291310080).

Almost surely, 2^71739088517 is an apocalyptic number.

It is an amenable number.

71739088517 is a deficient number, since it is larger than the sum of its proper divisors (2591392123).

71739088517 is a wasteful number, since it uses less digits than its factorization.

71739088517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921043.

The product of its (nonzero) digits is 2963520, while the sum is 56.

The spelling of 71739088517 in words is "seventy-one billion, seven hundred thirty-nine million, eighty-eight thousand, five hundred seventeen".