20500812411549 has 8 divisors (see below), whose sum is σ = 27342525258912. Its totient is φ = 13663153919280.

The previous prime is 20500812411539. The next prime is 20500812411601. The reversal of 20500812411549 is 94511421800502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20500812411549 - 2¹¹ = 20500812409501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20500812411549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20500812411539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013576974 + ... + 1013597199.

It is an arithmetic number, because the mean of its divisors is an integer number (3417815657364).

Almost surely, 2^{20500812411549} is an apocalyptic number.

It is an amenable number.

20500812411549 is a deficient number, since it is larger than the sum of its proper divisors (6841712847363).

20500812411549 is a wasteful number, since it uses less digits than its factorization.

20500812411549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027177547.

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 20500812411549 in words is "twenty trillion, five hundred billion, eight hundred twelve million, four hundred eleven thousand, five hundred forty-nine".