7872908617729 has 8 divisors (see below), whose sum is σ = 7887185044992. Its totient is φ = 7858642085280.

The previous prime is 7872908617711. The next prime is 7872908617747. The reversal of 7872908617729 is 9277168092787.

It is an interprime number because it is at equal distance from previous prime (7872908617711) and next prime (7872908617747).

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 7872908617729 - 2⁵ = 7872908617697 is a prime.

It is a super-2 number, since 2×7872908617729² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7872908614729) 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, 880012 + ... + 4064509.

It is an arithmetic number, because the mean of its divisors is an integer number (985898130624).

Almost surely, 2^{7872908617729} is an apocalyptic number.

It is an amenable number.

7872908617729 is a deficient number, since it is larger than the sum of its proper divisors (14276427263).

7872908617729 is a wasteful number, since it uses less digits than its factorization.

7872908617729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947407.

The product of its (nonzero) digits is 298722816, while the sum is 73.

The spelling of 7872908617729 in words is "seven trillion, eight hundred seventy-two billion, nine hundred eight million, six hundred seventeen thousand, seven hundred twenty-nine".