3839657909966 has 16 divisors (see below), whose sum is σ = 6247018753920. Its totient is φ = 1762827160320.

The previous prime is 3839657909963. The next prime is 3839657909981. The reversal of 3839657909966 is 6699097569383.

It is a super-3 number, since 3×3839657909966³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3839657909963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1377207326 + ... + 1377210113.

It is an arithmetic number, because the mean of its divisors is an integer number (390438672120).

Almost surely, 2^{3839657909966} is an apocalyptic number.

3839657909966 is a deficient number, since it is larger than the sum of its proper divisors (2407360843954).

3839657909966 is a wasteful number, since it uses less digits than its factorization.

3839657909966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754417499.

The product of its (nonzero) digits is 3571283520, while the sum is 80.

The spelling of 3839657909966 in words is "three trillion, eight hundred thirty-nine billion, six hundred fifty-seven million, nine hundred nine thousand, nine hundred sixty-six".