20290321740447 has 96 divisors (see below), whose sum is σ = 32825599312896. Its totient is φ = 11971930118400.

The previous prime is 20290321740421. The next prime is 20290321740463. The reversal of 20290321740447 is 74404712309202.

20290321740447 is a `hidden beast` number, since 2 + 0 + 2 + 9 + 0 + 32 + 174 + 0 + 447 = 666.

It is not a de Polignac number, because 20290321740447 - 2¹¹ = 20290321738399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20290321740347) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2251223913 + ... + 2251232925.

It is an arithmetic number, because the mean of its divisors is an integer number (341933326176).

Almost surely, 2^{20290321740447} is an apocalyptic number.

20290321740447 is a deficient number, since it is larger than the sum of its proper divisors (12535277572449).

20290321740447 is a wasteful number, since it uses less digits than its factorization.

20290321740447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11581 (or 11578 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 20290321740447 in words is "twenty trillion, two hundred ninety billion, three hundred twenty-one million, seven hundred forty thousand, four hundred forty-seven".