2146078909929 has 16 divisors (see below), whose sum is σ = 2872946349504. Its totient is φ = 1424965800000.

The previous prime is 2146078909913. The next prime is 2146078909979. The reversal of 2146078909929 is 9299098706412.

It is not a de Polignac number, because 2146078909929 - 2⁴ = 2146078909913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2146078909929.

It is not an unprimeable number, because it can be changed into a prime (2146078909979) 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 15 ways as a sum of consecutive naturals, for example, 39355407 + ... + 39409899.

It is an arithmetic number, because the mean of its divisors is an integer number (179559146844).

Almost surely, 2^{2146078909929} is an apocalyptic number.

It is an amenable number.

2146078909929 is a deficient number, since it is larger than the sum of its proper divisors (726867439575).

2146078909929 is a wasteful number, since it uses less digits than its factorization.

2146078909929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107048.

The product of its (nonzero) digits is 35271936, while the sum is 66.

The spelling of 2146078909929 in words is "two trillion, one hundred forty-six billion, seventy-eight million, nine hundred nine thousand, nine hundred twenty-nine".