2049042668329 has 4 divisors (see below), whose sum is σ = 2049566590080. Its totient is φ = 2048518746580.

The previous prime is 2049042668263. The next prime is 2049042668347. The reversal of 2049042668329 is 9238662409402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2049042668329 - 2¹⁷ = 2049042537257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2049042668329.

It is not an unprimeable number, because it can be changed into a prime (2049042668369) 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 3 ways as a sum of consecutive naturals, for example, 261955009 + ... + 261962830.

It is an arithmetic number, because the mean of its divisors is an integer number (512391647520).

Almost surely, 2^{2049042668329} is an apocalyptic number.

It is an amenable number.

2049042668329 is a deficient number, since it is larger than the sum of its proper divisors (523921751).

2049042668329 is an equidigital number, since it uses as much as digits as its factorization.

2049042668329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523921750.

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 2049042668329 in words is "two trillion, forty-nine billion, forty-two million, six hundred sixty-eight thousand, three hundred twenty-nine".