20532451451 has 2 divisors, whose sum is σ = 20532451452. Its totient is φ = 20532451450.

The previous prime is 20532451391. The next prime is 20532451481. The reversal of 20532451451 is 15415423502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20532451451 - 2³⁴ = 3352582267 is a prime.

It is not a weakly prime, because it can be changed into another prime (20532451481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266225725 + 10266225726.

It is an arithmetic number, because the mean of its divisors is an integer number (10266225726).

Almost surely, 2^20532451451 is an apocalyptic number.

20532451451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20532451451 is an equidigital number, since it uses as much as digits as its factorization.

20532451451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 20532451451 its reverse (15415423502), we get a palindrome (35947874953).

The spelling of 20532451451 in words is "twenty billion, five hundred thirty-two million, four hundred fifty-one thousand, four hundred fifty-one".