11409205398436 has 6 divisors (see below), whose sum is σ = 19966109447270. Its totient is φ = 5704602699216.

The previous prime is 11409205398431. The next prime is 11409205398443. The reversal of 11409205398436 is 63489350290411.

It can be written as a sum of positive squares in only one way, i.e., 10739253326400 + 669952072036 = 3277080^2 + 818506^2 .

It is a super-2 number, since 2×11409205398436² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11409205398431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1426150674801 + ... + 1426150674808.

Almost surely, 2^{11409205398436} is an apocalyptic number.

It is an amenable number.

11409205398436 is a deficient number, since it is larger than the sum of its proper divisors (8556904048834).

11409205398436 is a wasteful number, since it uses less digits than its factorization.

11409205398436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852301349613 (or 2852301349611 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 55.

It can be divided in two parts, 1140920 and 5398436, that added together give a palindrome (6539356).

The spelling of 11409205398436 in words is "eleven trillion, four hundred nine billion, two hundred five million, three hundred ninety-eight thousand, four hundred thirty-six".