129563353613 has 4 divisors (see below), whose sum is σ = 129564076860. Its totient is φ = 129562630368.

The previous prime is 129563353607. The next prime is 129563353637. The reversal of 129563353613 is 316353365921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 66483012649 + 63080340964 = 257843^2 + 251158^2 .

It is a cyclic number.

It is not a de Polignac number, because 129563353613 - 2⁸ = 129563353357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129563353643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128681 + ... + 525057.

It is an arithmetic number, because the mean of its divisors is an integer number (32391019215).

Almost surely, 2^129563353613 is an apocalyptic number.

It is an amenable number.

129563353613 is a deficient number, since it is larger than the sum of its proper divisors (723247).

129563353613 is an equidigital number, since it uses as much as digits as its factorization.

129563353613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723246.

The product of its digits is 1312200, while the sum is 47.

The spelling of 129563353613 in words is "one hundred twenty-nine billion, five hundred sixty-three million, three hundred fifty-three thousand, six hundred thirteen".