7669978484447 has 4 divisors (see below), whose sum is σ = 7670156886600. Its totient is φ = 7669800082296.

The previous prime is 7669978484419. The next prime is 7669978484449. The reversal of 7669978484447 is 7444848799667.

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

It is a cyclic number.

It is not a de Polignac number, because 7669978484447 - 2³⁰ = 7668904742623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7669978484449) 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, 89136572 + ... + 89222577.

It is an arithmetic number, because the mean of its divisors is an integer number (1917539221650).

Almost surely, 2^{7669978484447} is an apocalyptic number.

7669978484447 is a deficient number, since it is larger than the sum of its proper divisors (178402153).

7669978484447 is a wasteful number, since it uses less digits than its factorization.

7669978484447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178402152.

The product of its digits is 16387080192, while the sum is 83.

The spelling of 7669978484447 in words is "seven trillion, six hundred sixty-nine billion, nine hundred seventy-eight million, four hundred eighty-four thousand, four hundred forty-seven".