20674749034369 has 4 divisors (see below), whose sum is σ = 21114637311744. Its totient is φ = 20234860756996.

The previous prime is 20674749034363. The next prime is 20674749034439. The reversal of 20674749034369 is 96343094747602.

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 20674749034369 - 2⁵ = 20674749034337 is a prime.

It is a super-2 number, since 2×20674749034369² (a number of 27 digits) contains 22 as substring.

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 20674749034369.

It is not an unprimeable number, because it can be changed into a prime (20674749034363) 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, 219944138617 + ... + 219944138710.

It is an arithmetic number, because the mean of its divisors is an integer number (5278659327936).

Almost surely, 2^{20674749034369} is an apocalyptic number.

It is an amenable number.

20674749034369 is a deficient number, since it is larger than the sum of its proper divisors (439888277375).

20674749034369 is an equidigital number, since it uses as much as digits as its factorization.

20674749034369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439888277374.

The product of its (nonzero) digits is 164602368, while the sum is 64.

The spelling of 20674749034369 in words is "twenty trillion, six hundred seventy-four billion, seven hundred forty-nine million, thirty-four thousand, three hundred sixty-nine".