13520223553 has 2 divisors, whose sum is σ = 13520223554. Its totient is φ = 13520223552.

The previous prime is 13520223491. The next prime is 13520223569. The reversal of 13520223553 is 35532202531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11148825744 + 2371397809 = 105588^2 + 48697^2 .

It is a cyclic number.

It is not a de Polignac number, because 13520223553 - 2¹³ = 13520215361 is a prime.

It is not a weakly prime, because it can be changed into another prime (13520223583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760111776 + 6760111777.

It is an arithmetic number, because the mean of its divisors is an integer number (6760111777).

Almost surely, 2^13520223553 is an apocalyptic number.

It is an amenable number.

13520223553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13520223553 is an equidigital number, since it uses as much as digits as its factorization.

13520223553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 13520223553 in words is "thirteen billion, five hundred twenty million, two hundred twenty-three thousand, five hundred fifty-three".