2146578366121 has 8 divisors (see below), whose sum is σ = 2453245369344. Its totient is φ = 1839914600640.

The previous prime is 2146578366109. The next prime is 2146578366131. The reversal of 2146578366121 is 1216638756412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2146578366121 - 2⁷ = 2146578365993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2146578366131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833601 + ... + 2233393.

It is an arithmetic number, because the mean of its divisors is an integer number (306655671168).

Almost surely, 2^{2146578366121} is an apocalyptic number.

It is an amenable number.

2146578366121 is a deficient number, since it is larger than the sum of its proper divisors (306667003223).

2146578366121 is a wasteful number, since it uses less digits than its factorization.

2146578366121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618871.

The product of its digits is 2903040, while the sum is 52.

The spelling of 2146578366121 in words is "two trillion, one hundred forty-six billion, five hundred seventy-eight million, three hundred sixty-six thousand, one hundred twenty-one".