20504132153 has 2 divisors, whose sum is σ = 20504132154. Its totient is φ = 20504132152.

The previous prime is 20504132147. The next prime is 20504132213. The reversal of 20504132153 is 35123140502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15405029689 + 5099102464 = 124117^2 + 71408^2 .

It is a cyclic number.

It is not a de Polignac number, because 20504132153 - 2¹⁶ = 20504066617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20504132113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10252066076 + 10252066077.

It is an arithmetic number, because the mean of its divisors is an integer number (10252066077).

Almost surely, 2^20504132153 is an apocalyptic number.

It is an amenable number.

20504132153 is a deficient number, since it is larger than the sum of its proper divisors (1).

20504132153 is an equidigital number, since it uses as much as digits as its factorization.

20504132153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20504132153 its reverse (35123140502), we get a palindrome (55627272655).

The spelling of 20504132153 in words is "twenty billion, five hundred four million, one hundred thirty-two thousand, one hundred fifty-three".