11204340405 has 32 divisors (see below), whose sum is σ = 18715207680. Its totient is φ = 5713139520.

The previous prime is 11204340391. The next prime is 11204340409. The reversal of 11204340405 is 50404340211.

It is not a de Polignac number, because 11204340405 - 2⁶ = 11204340341 is a prime.

It is a super-2 number, since 2×11204340405² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11204340409) 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 31 ways as a sum of consecutive naturals, for example, 869560 + ... + 882350.

It is an arithmetic number, because the mean of its divisors is an integer number (584850240).

Almost surely, 2^11204340405 is an apocalyptic number.

11204340405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11204340405 is a deficient number, since it is larger than the sum of its proper divisors (7510867275).

11204340405 is a wasteful number, since it uses less digits than its factorization.

11204340405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15361.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 11204340405 its reverse (50404340211), we get a palindrome (61608680616).

The spelling of 11204340405 in words is "eleven billion, two hundred four million, three hundred forty thousand, four hundred five".