20534454053 has 2 divisors, whose sum is σ = 20534454054. Its totient is φ = 20534454052.

The previous prime is 20534454007. The next prime is 20534454077. The reversal of 20534454053 is 35045443502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19056974209 + 1477479844 = 138047^2 + 38438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20534454053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20534454253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10267227026 + 10267227027.

It is an arithmetic number, because the mean of its divisors is an integer number (10267227027).

Almost surely, 2^20534454053 is an apocalyptic number.

It is an amenable number.

20534454053 is a deficient number, since it is larger than the sum of its proper divisors (1).

20534454053 is an equidigital number, since it uses as much as digits as its factorization.

20534454053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 20534454053 its reverse (35045443502), we get a palindrome (55579897555).

The spelling of 20534454053 in words is "twenty billion, five hundred thirty-four million, four hundred fifty-four thousand, fifty-three".