9640909645550 has 12 divisors (see below), whose sum is σ = 17932091940816. Its totient is φ = 3856363858200.

The previous prime is 9640909645517. The next prime is 9640909645553. The reversal of 9640909645550 is 555469090469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9640909645553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96409096406 + ... + 96409096505.

It is an arithmetic number, because the mean of its divisors is an integer number (1494340995068).

Almost surely, 2^{9640909645550} is an apocalyptic number.

9640909645550 is a deficient number, since it is larger than the sum of its proper divisors (8291182295266).

9640909645550 is a wasteful number, since it uses less digits than its factorization.

9640909645550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192818192923 (or 192818192918 counting only the distinct ones).

The product of its (nonzero) digits is 52488000, while the sum is 62.

The spelling of 9640909645550 in words is "nine trillion, six hundred forty billion, nine hundred nine million, six hundred forty-five thousand, five hundred fifty".