9745894562679 has 20 divisors (see below), whose sum is σ = 15882198548040. Its totient is φ = 5906602764720.

The previous prime is 9745894562629. The next prime is 9745894562683. The reversal of 9745894562679 is 9762654985479.

It is a happy number.

9745894562679 is a `hidden beast` number, since 9 + 7 + 4 + 589 + 4 + 5 + 6 + 26 + 7 + 9 = 666.

It is not a de Polignac number, because 9745894562679 - 2⁸ = 9745894562423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 9745894562598 and 9745894562607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9745894562609) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5469075744 + ... + 5469077525.

It is an arithmetic number, because the mean of its divisors is an integer number (794109927402).

Almost surely, 2^{9745894562679} is an apocalyptic number.

9745894562679 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9745894562679 is a deficient number, since it is larger than the sum of its proper divisors (6136303985361).

9745894562679 is a wasteful number, since it uses less digits than its factorization.

9745894562679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10938153292 (or 10938153283 counting only the distinct ones).

The product of its digits is 8230118400, while the sum is 81.

The spelling of 9745894562679 in words is "nine trillion, seven hundred forty-five billion, eight hundred ninety-four million, five hundred sixty-two thousand, six hundred seventy-nine".