13284787405 has 16 divisors (see below), whose sum is σ = 16336072368. Its totient is φ = 10365120000.

The previous prime is 13284787391. The next prime is 13284787409. The reversal of 13284787405 is 50478748231.

It can be written as a sum of positive squares in 8 ways, for example, as 5895321961 + 7389465444 = 76781^2 + 85962^2 .

It is not a de Polignac number, because 13284787405 - 2¹¹ = 13284785357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13284787409) 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 15 ways as a sum of consecutive naturals, for example, 716755 + ... + 735055.

It is an arithmetic number, because the mean of its divisors is an integer number (1021004523).

Almost surely, 2^13284787405 is an apocalyptic number.

It is an amenable number.

13284787405 is a deficient number, since it is larger than the sum of its proper divisors (3051284963).

13284787405 is a wasteful number, since it uses less digits than its factorization.

13284787405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21888.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 13284787405 in words is "thirteen billion, two hundred eighty-four million, seven hundred eighty-seven thousand, four hundred five".