9709534555845 has 16 divisors (see below), whose sum is σ = 15672735427392. Its totient is φ = 5132591717120.

The previous prime is 9709534555841. The next prime is 9709534555907. The reversal of 9709534555845 is 5485554359079.

It is not a de Polignac number, because 9709534555845 - 2² = 9709534555841 is a prime.

It is a super-2 number, since 2×9709534555845² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9709534555845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9709534555841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2864167791 + ... + 2864171180.

It is an arithmetic number, because the mean of its divisors is an integer number (979545964212).

Almost surely, 2^{9709534555845} is an apocalyptic number.

It is an amenable number.

9709534555845 is a deficient number, since it is larger than the sum of its proper divisors (5963200871547).

9709534555845 is a wasteful number, since it uses less digits than its factorization.

9709534555845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5728339092.

The product of its (nonzero) digits is 680400000, while the sum is 69.

The spelling of 9709534555845 in words is "nine trillion, seven hundred nine billion, five hundred thirty-four million, five hundred fifty-five thousand, eight hundred forty-five".