20511313132043 has 2 divisors, whose sum is σ = 20511313132044. Its totient is φ = 20511313132042.

The previous prime is 20511313132019. The next prime is 20511313132069. The reversal of 20511313132043 is 34023131311502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20511313132043 - 2¹⁸ = 20511312869899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20511313131997 and 20511313132015.

It is not a weakly prime, because it can be changed into another prime (20511313332043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10255656566021 + 10255656566022.

It is an arithmetic number, because the mean of its divisors is an integer number (10255656566022).

Almost surely, 2^{20511313132043} is an apocalyptic number.

20511313132043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20511313132043 is an equidigital number, since it uses as much as digits as its factorization.

20511313132043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 20511313132043 its reverse (34023131311502), we get a palindrome (54534444443545).

The spelling of 20511313132043 in words is "twenty trillion, five hundred eleven billion, three hundred thirteen million, one hundred thirty-two thousand, forty-three".