20736147446047 has 16 divisors (see below), whose sum is σ = 23606554194432. Its totient is φ = 18030080669920.

The previous prime is 20736147445991. The next prime is 20736147446051. The reversal of 20736147446047 is 74064474163702.

It is not a de Polignac number, because 20736147446047 - 2³¹ = 20733999962399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20736147446647) 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 15 ways as a sum of consecutive naturals, for example, 316053 + ... + 6447649.

It is an arithmetic number, because the mean of its divisors is an integer number (1475409637152).

Almost surely, 2^{20736147446047} is an apocalyptic number.

20736147446047 is a deficient number, since it is larger than the sum of its proper divisors (2870406748385).

20736147446047 is a wasteful number, since it uses less digits than its factorization.

20736147446047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144998.

The product of its (nonzero) digits is 18966528, while the sum is 55.

The spelling of 20736147446047 in words is "twenty trillion, seven hundred thirty-six billion, one hundred forty-seven million, four hundred forty-six thousand, forty-seven".