13405740202 has 4 divisors (see below), whose sum is σ = 20108610306. Its totient is φ = 6702870100.

The previous prime is 13405740199. The next prime is 13405740209. The reversal of 13405740202 is 20204750431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9668985561 + 3736754641 = 98331^2 + 61129^2 .

It is not an unprimeable number, because it can be changed into a prime (13405740209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3351435049 + ... + 3351435052.

Almost surely, 2^13405740202 is an apocalyptic number.

13405740202 is a deficient number, since it is larger than the sum of its proper divisors (6702870104).

13405740202 is an equidigital number, since it uses as much as digits as its factorization.

13405740202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702870103.

The product of its (nonzero) digits is 6720, while the sum is 28.

The spelling of 13405740202 in words is "thirteen billion, four hundred five million, seven hundred forty thousand, two hundred two".