12602535653 has 2 divisors, whose sum is σ = 12602535654. Its totient is φ = 12602535652.

The previous prime is 12602535643. The next prime is 12602535677. The reversal of 12602535653 is 35653520621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8229755524 + 4372780129 = 90718^2 + 66127^2 .

It is an emirp because it is prime and its reverse (35653520621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12602535653 - 2²⁶ = 12535426789 is a prime.

It is a super-2 number, since 2×12602535653² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12602535643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6301267826 + 6301267827.

It is an arithmetic number, because the mean of its divisors is an integer number (6301267827).

Almost surely, 2^12602535653 is an apocalyptic number.

It is an amenable number.

12602535653 is a deficient number, since it is larger than the sum of its proper divisors (1).

12602535653 is an equidigital number, since it uses as much as digits as its factorization.

12602535653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 12602535653 in words is "twelve billion, six hundred two million, five hundred thirty-five thousand, six hundred fifty-three".