13551553035505 has 4 divisors (see below), whose sum is σ = 16261863642612. Its totient is φ = 10841242428400.

The previous prime is 13551553035499. The next prime is 13551553035539. The reversal of 13551553035505 is 50553035515531.

13551553035505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5908224707856 + 7643328327649 = 2430684^2 + 2764657^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13551553035505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1355155303546 + ... + 1355155303555.

It is an arithmetic number, because the mean of its divisors is an integer number (4065465910653).

Almost surely, 2^{13551553035505} is an apocalyptic number.

It is an amenable number.

13551553035505 is a deficient number, since it is larger than the sum of its proper divisors (2710310607107).

13551553035505 is an equidigital number, since it uses as much as digits as its factorization.

13551553035505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710310607106.

The product of its (nonzero) digits is 2109375, while the sum is 46.

The spelling of 13551553035505 in words is "thirteen trillion, five hundred fifty-one billion, five hundred fifty-three million, thirty-five thousand, five hundred five".