12640280053 has 2 divisors, whose sum is σ = 12640280054. Its totient is φ = 12640280052.

The previous prime is 12640280021. The next prime is 12640280069. The reversal of 12640280053 is 35008204621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7326161649 + 5314118404 = 85593^2 + 72898^2 .

It is a cyclic number.

It is not a de Polignac number, because 12640280053 - 2⁵ = 12640280021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12640279997 and 12640280024.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12640281053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320140026 + 6320140027.

It is an arithmetic number, because the mean of its divisors is an integer number (6320140027).

Almost surely, 2^12640280053 is an apocalyptic number.

It is an amenable number.

12640280053 is a deficient number, since it is larger than the sum of its proper divisors (1).

12640280053 is an equidigital number, since it uses as much as digits as its factorization.

12640280053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 12640280053 its reverse (35008204621), we get a palindrome (47648484674).

The spelling of 12640280053 in words is "twelve billion, six hundred forty million, two hundred eighty thousand, fifty-three".