3948609566121 has 16 divisors (see below), whose sum is σ = 5744016903360. Its totient is φ = 2392853037120.

The previous prime is 3948609566117. The next prime is 3948609566159. The reversal of 3948609566121 is 1216659068493.

It is not a de Polignac number, because 3948609566121 - 2² = 3948609566117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3948609566921) 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, 5762470 + ... + 6411183.

It is an arithmetic number, because the mean of its divisors is an integer number (359001056460).

Almost surely, 2^{3948609566121} is an apocalyptic number.

It is an amenable number.

3948609566121 is a deficient number, since it is larger than the sum of its proper divisors (1795407337239).

3948609566121 is a wasteful number, since it uses less digits than its factorization.

3948609566121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12183496.

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 3948609566121 in words is "three trillion, nine hundred forty-eight billion, six hundred nine million, five hundred sixty-six thousand, one hundred twenty-one".