20531322463 has 2 divisors, whose sum is σ = 20531322464. Its totient is φ = 20531322462.

The previous prime is 20531322443. The next prime is 20531322481. The reversal of 20531322463 is 36422313502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20531322463 - 2¹⁷ = 20531191391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20531322443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10265661231 + 10265661232.

It is an arithmetic number, because the mean of its divisors is an integer number (10265661232).

Almost surely, 2^20531322463 is an apocalyptic number.

20531322463 is a deficient number, since it is larger than the sum of its proper divisors (1).

20531322463 is an equidigital number, since it uses as much as digits as its factorization.

20531322463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 20531322463 its reverse (36422313502), we get a palindrome (56953635965).

The spelling of 20531322463 in words is "twenty billion, five hundred thirty-one million, three hundred twenty-two thousand, four hundred sixty-three".