20000044784623 has 2 divisors, whose sum is σ = 20000044784624. Its totient is φ = 20000044784622.

The previous prime is 20000044784609. The next prime is 20000044784641. The reversal of 20000044784623 is 32648744000002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000044784623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000044784023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000022392311 + 10000022392312.

It is an arithmetic number, because the mean of its divisors is an integer number (10000022392312).

Almost surely, 2^{20000044784623} is an apocalyptic number.

20000044784623 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000044784623 is an equidigital number, since it uses as much as digits as its factorization.

20000044784623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 40.

Adding to 20000044784623 its reverse (32648744000002), we get a palindrome (52648788784625).

The spelling of 20000044784623 in words is "twenty trillion, forty-four million, seven hundred eighty-four thousand, six hundred twenty-three".