20674374016 has 32 divisors (see below), whose sum is σ = 43610012280. Its totient is φ = 9729116160.

The previous prime is 20674374011. The next prime is 20674374029. The reversal of 20674374016 is 61047347602.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 20674374016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20674374011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4748370 + ... + 4752721.

Almost surely, 2^20674374016 is an apocalyptic number.

It is an amenable number.

20674374016 is an abundant number, since it is smaller than the sum of its proper divisors (22935638264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20674374016 is an equidigital number, since it uses as much as digits as its factorization.

20674374016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9501122 (or 9501110 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The spelling of 20674374016 in words is "twenty billion, six hundred seventy-four million, three hundred seventy-four thousand, sixteen".