20132400451 has 2 divisors, whose sum is σ = 20132400452. Its totient is φ = 20132400450.

The previous prime is 20132400443. The next prime is 20132400487. The reversal of 20132400451 is 15400423102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20132400451 - 2³ = 20132400443 is a prime.

It is not a weakly prime, because it can be changed into another prime (20132403451) 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, 10066200225 + 10066200226.

It is an arithmetic number, because the mean of its divisors is an integer number (10066200226).

Almost surely, 2^20132400451 is an apocalyptic number.

20132400451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132400451 is an equidigital number, since it uses as much as digits as its factorization.

20132400451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20132400451 its reverse (15400423102), we get a palindrome (35532823553).

The spelling of 20132400451 in words is "twenty billion, one hundred thirty-two million, four hundred thousand, four hundred fifty-one".