20824389398051 has 2 divisors, whose sum is σ = 20824389398052. Its totient is φ = 20824389398050.

The previous prime is 20824389398003. The next prime is 20824389398069. The reversal of 20824389398051 is 15089398342802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20824389398051 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20824389398551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10412194699025 + 10412194699026.

It is an arithmetic number, because the mean of its divisors is an integer number (10412194699026).

Almost surely, 2^{20824389398051} is an apocalyptic number.

20824389398051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20824389398051 is an equidigital number, since it uses as much as digits as its factorization.

20824389398051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29859840, while the sum is 62.

The spelling of 20824389398051 in words is "twenty trillion, eight hundred twenty-four billion, three hundred eighty-nine million, three hundred ninety-eight thousand, fifty-one".