13034513521 has 2 divisors, whose sum is σ = 13034513522. Its totient is φ = 13034513520.

The previous prime is 13034513519. The next prime is 13034513533. The reversal of 13034513521 is 12531543031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11484122896 + 1550390625 = 107164^2 + 39375^2 .

It is a cyclic number.

It is not a de Polignac number, because 13034513521 - 2¹ = 13034513519 is a prime.

Together with 13034513519, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13034513521.

It is not a weakly prime, because it can be changed into another prime (13034573521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6517256760 + 6517256761.

It is an arithmetic number, because the mean of its divisors is an integer number (6517256761).

Almost surely, 2^13034513521 is an apocalyptic number.

It is an amenable number.

13034513521 is a deficient number, since it is larger than the sum of its proper divisors (1).

13034513521 is an equidigital number, since it uses as much as digits as its factorization.

13034513521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 13034513521 in words is "thirteen billion, thirty-four million, five hundred thirteen thousand, five hundred twenty-one".