13634521093 has 2 divisors, whose sum is σ = 13634521094. Its totient is φ = 13634521092.

The previous prime is 13634521001. The next prime is 13634521123. The reversal of 13634521093 is 39012543631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13433505409 + 201015684 = 115903^2 + 14178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13634521093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13634521393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6817260546 + 6817260547.

It is an arithmetic number, because the mean of its divisors is an integer number (6817260547).

Almost surely, 2^13634521093 is an apocalyptic number.

It is an amenable number.

13634521093 is a deficient number, since it is larger than the sum of its proper divisors (1).

13634521093 is an equidigital number, since it uses as much as digits as its factorization.

13634521093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 13634521093 in words is "thirteen billion, six hundred thirty-four million, five hundred twenty-one thousand, ninety-three".