7121688561179 has 8 divisors (see below), whose sum is σ = 7155735673920. Its totient is φ = 7087644232200.

The previous prime is 7121688561019. The next prime is 7121688561181. The reversal of 7121688561179 is 9711658861217.

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-7121688561179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7121688560179) 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 7 ways as a sum of consecutive naturals, for example, 4526312 + ... + 5893290.

It is an arithmetic number, because the mean of its divisors is an integer number (894466959240).

Almost surely, 2^{7121688561179} is an apocalyptic number.

7121688561179 is a deficient number, since it is larger than the sum of its proper divisors (34047112741).

7121688561179 is a wasteful number, since it uses less digits than its factorization.

7121688561179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391881.

The product of its digits is 10160640, while the sum is 62.

It can be divided in two parts, 7121688 and 561179, that added together give a palindrome (7682867).

The spelling of 7121688561179 in words is "seven trillion, one hundred twenty-one billion, six hundred eighty-eight million, five hundred sixty-one thousand, one hundred seventy-nine".