12653604443 has 2 divisors, whose sum is σ = 12653604444. Its totient is φ = 12653604442.

The previous prime is 12653604437. The next prime is 12653604497. The reversal of 12653604443 is 34440635621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12653604443 - 2⁴ = 12653604427 is a prime.

It is a super-2 number, since 2×12653604443² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12653604397 and 12653604406.

It is not a weakly prime, because it can be changed into another prime (12653634443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6326802221 + 6326802222.

It is an arithmetic number, because the mean of its divisors is an integer number (6326802222).

Almost surely, 2^12653604443 is an apocalyptic number.

12653604443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12653604443 is an equidigital number, since it uses as much as digits as its factorization.

12653604443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 12653604443 in words is "twelve billion, six hundred fifty-three million, six hundred four thousand, four hundred forty-three".