13552115321 has 2 divisors, whose sum is σ = 13552115322. Its totient is φ = 13552115320.

The previous prime is 13552115303. The next prime is 13552115333. The reversal of 13552115321 is 12351125531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12770130025 + 781985296 = 113005^2 + 27964^2 .

It is a cyclic number.

It is not a de Polignac number, because 13552115321 - 2³⁰ = 12478373497 is a prime.

It is not a weakly prime, because it can be changed into another prime (13552115221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6776057660 + 6776057661.

It is an arithmetic number, because the mean of its divisors is an integer number (6776057661).

Almost surely, 2^13552115321 is an apocalyptic number.

It is an amenable number.

13552115321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13552115321 is an equidigital number, since it uses as much as digits as its factorization.

13552115321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 29.

The spelling of 13552115321 in words is "thirteen billion, five hundred fifty-two million, one hundred fifteen thousand, three hundred twenty-one".