9640166618379 has 48 divisors (see below), whose sum is σ = 14929752378240. Its totient is φ = 5513485824000.

The previous prime is 9640166618363. The next prime is 9640166618461. The reversal of 9640166618379 is 9738166610469.

It is a happy number.

It is not a de Polignac number, because 9640166618379 - 2⁴ = 9640166618363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9640166618879) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 946797 + ... + 4491854.

It is an arithmetic number, because the mean of its divisors is an integer number (311036507880).

Almost surely, 2^{9640166618379} is an apocalyptic number.

9640166618379 is a deficient number, since it is larger than the sum of its proper divisors (5289585759861).

9640166618379 is a wasteful number, since it uses less digits than its factorization.

9640166618379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438952 (or 5438941 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 66.

The spelling of 9640166618379 in words is "nine trillion, six hundred forty billion, one hundred sixty-six million, six hundred eighteen thousand, three hundred seventy-nine".