20574213615644 has 12 divisors (see below), whose sum is σ = 38774479506504. Its totient is φ = 9495790899504.

The previous prime is 20574213615619. The next prime is 20574213615721. The reversal of 20574213615644 is 44651631247502.

It is a junction number, because it is equal to n+sod(n) for n = 20574213615592 and 20574213615601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197828977022 + ... + 197828977125.

It is an arithmetic number, because the mean of its divisors is an integer number (3231206625542).

Almost surely, 2^{20574213615644} is an apocalyptic number.

It is an amenable number.

20574213615644 is a deficient number, since it is larger than the sum of its proper divisors (18200265890860).

20574213615644 is a wasteful number, since it uses less digits than its factorization.

20574213615644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395657954164 (or 395657954162 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 20574213615644 in words is "twenty trillion, five hundred seventy-four billion, two hundred thirteen million, six hundred fifteen thousand, six hundred forty-four".