20364240571751 has 2 divisors, whose sum is σ = 20364240571752. Its totient is φ = 20364240571750.

The previous prime is 20364240571721. The next prime is 20364240571781. The reversal of 20364240571751 is 15717504246302.

It is a balanced prime because it is at equal distance from previous prime (20364240571721) and next prime (20364240571781).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20364240571751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20364240571696 and 20364240571705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20364240571721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10182120285875 + 10182120285876.

It is an arithmetic number, because the mean of its divisors is an integer number (10182120285876).

Almost surely, 2^{20364240571751} is an apocalyptic number.

20364240571751 is a deficient number, since it is larger than the sum of its proper divisors (1).

20364240571751 is an equidigital number, since it uses as much as digits as its factorization.

20364240571751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 20364240571751 in words is "twenty trillion, three hundred sixty-four billion, two hundred forty million, five hundred seventy-one thousand, seven hundred fifty-one".