13351532505121 has 4 divisors (see below), whose sum is σ = 13420711430212. Its totient is φ = 13282353580032.

The previous prime is 13351532505067. The next prime is 13351532505131. The reversal of 13351532505121 is 12150523515331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7948813364496 + 5402719140625 = 2819364^2 + 2324375^2 .

It is a cyclic number.

It is not a de Polignac number, because 13351532505121 - 2³⁵ = 13317172766753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13351532505131) 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, 34589462256 + ... + 34589462641.

It is an arithmetic number, because the mean of its divisors is an integer number (3355177857553).

Almost surely, 2^{13351532505121} is an apocalyptic number.

It is an amenable number.

13351532505121 is a deficient number, since it is larger than the sum of its proper divisors (69178925091).

13351532505121 is an equidigital number, since it uses as much as digits as its factorization.

13351532505121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69178925090.

The product of its (nonzero) digits is 67500, while the sum is 37.

The spelling of 13351532505121 in words is "thirteen trillion, three hundred fifty-one billion, five hundred thirty-two million, five hundred five thousand, one hundred twenty-one".