20280883338643 has 2 divisors, whose sum is σ = 20280883338644. Its totient is φ = 20280883338642.

The previous prime is 20280883338539. The next prime is 20280883338647. The reversal of 20280883338643 is 34683338808202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20280883338643 is a prime.

It is a super-2 number, since 2×20280883338643² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20280883338647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10140441669321 + 10140441669322.

It is an arithmetic number, because the mean of its divisors is an integer number (10140441669322).

Almost surely, 2^{20280883338643} is an apocalyptic number.

20280883338643 is a deficient number, since it is larger than the sum of its proper divisors (1).

20280883338643 is an equidigital number, since it uses as much as digits as its factorization.

20280883338643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31850496, while the sum is 58.

The spelling of 20280883338643 in words is "twenty trillion, two hundred eighty billion, eight hundred eighty-three million, three hundred thirty-eight thousand, six hundred forty-three".