9609999999999 has 64 divisors (see below), whose sum is σ = 15870504950784. Its totient is φ = 5046709764096.

The previous prime is 9609999999997. The next prime is 9610000000009. The reversal of 9609999999999 is 9999999999069.

It is a Cunningham number, because it is equal to 3100000²-1.

It is not a de Polignac number, because 9609999999999 - 2¹ = 9609999999997 is a prime.

It is a super-9 number, since 9×9609999999999⁹ (a number of 118 digits) contains 999999999 as substring.

9609999999999 is a modest number, since divided by 9999999 gives 960999 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 9609999999897 and 9609999999906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9609999999997) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52608807 + ... + 52791159.

It is an arithmetic number, because the mean of its divisors is an integer number (247976639856).

Almost surely, 2^{9609999999999} is an apocalyptic number.

9609999999999 is a deficient number, since it is larger than the sum of its proper divisors (6260504950785).

9609999999999 is a wasteful number, since it uses less digits than its factorization.

9609999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185856.

The product of its (nonzero) digits is 188286357654, while the sum is 105.

The spelling of 9609999999999 in words is "nine trillion, six hundred nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".