13403550497 has 4 divisors (see below), whose sum is σ = 13403786820. Its totient is φ = 13403314176.

The previous prime is 13403550493. The next prime is 13403550509. The reversal of 13403550497 is 79405530431.

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 5332504576 + 8071045921 = 73024^2 + 89839^2 .

It is a cyclic number.

It is not a de Polignac number, because 13403550497 - 2² = 13403550493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13403550491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23633 + ... + 165425.

It is an arithmetic number, because the mean of its divisors is an integer number (3350946705).

It is a Poulet number, since it divides 2^13403550496-1.

Almost surely, 2^13403550497 is an apocalyptic number.

13403550497 is the 94529-th pentagonal number.

It is an amenable number.

13403550497 is a deficient number, since it is larger than the sum of its proper divisors (236323).

13403550497 is an equidigital number, since it uses as much as digits as its factorization.

13403550497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236322.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 13403550497 in words is "thirteen billion, four hundred three million, five hundred fifty thousand, four hundred ninety-seven".