7478766678747 has 96 divisors (see below), whose sum is σ = 13228579348992. Its totient is φ = 3712303236096.

The previous prime is 7478766678731. The next prime is 7478766678829.

7478766678747 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7478766678747 - 2⁴ = 7478766678731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7478766678747.

It is not an unprimeable number, because it can be changed into a prime (7478766678247) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 453607738 + ... + 453624224.

It is an arithmetic number, because the mean of its divisors is an integer number (137797701552).

Almost surely, 2^{7478766678747} is an apocalyptic number.

7478766678747 is a deficient number, since it is larger than the sum of its proper divisors (5749812670245).

7478766678747 is a wasteful number, since it uses less digits than its factorization.

7478766678747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30497 (or 30490 counting only the distinct ones).

The product of its digits is 26022076416, while the sum is 84.

The spelling of 7478766678747 in words is "seven trillion, four hundred seventy-eight billion, seven hundred sixty-six million, six hundred seventy-eight thousand, seven hundred forty-seven".