7672236067721 has 4 divisors (see below), whose sum is σ = 7751331285012. Its totient is φ = 7593140850432.

The previous prime is 7672236067679. The next prime is 7672236067789. The reversal of 7672236067721 is 1277606322767.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2026807795600 + 5645428272121 = 1423660^2 + 2376011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7672236067721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7672236069721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39547608500 + ... + 39547608693.

It is an arithmetic number, because the mean of its divisors is an integer number (1937832821253).

Almost surely, 2^{7672236067721} is an apocalyptic number.

It is an amenable number.

7672236067721 is a deficient number, since it is larger than the sum of its proper divisors (79095217291).

7672236067721 is an equidigital number, since it uses as much as digits as its factorization.

7672236067721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79095217290.

The product of its (nonzero) digits is 12446784, while the sum is 56.

The spelling of 7672236067721 in words is "seven trillion, six hundred seventy-two billion, two hundred thirty-six million, sixty-seven thousand, seven hundred twenty-one".