11453213505 has 16 divisors (see below), whose sum is σ = 18337999680. Its totient is φ = 6104094528.

The previous prime is 11453213491. The next prime is 11453213521. The reversal of 11453213505 is 50531235411.

It is not a de Polignac number, because 11453213505 - 2⁸ = 11453213249 is a prime.

It is a super-2 number, since 2×11453213505² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245727 + ... + 288596.

It is an arithmetic number, because the mean of its divisors is an integer number (1146124980).

Almost surely, 2^11453213505 is an apocalyptic number.

11453213505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11453213505 is a deficient number, since it is larger than the sum of its proper divisors (6884786175).

11453213505 is a wasteful number, since it uses less digits than its factorization.

11453213505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535760.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 11453213505 its reverse (50531235411), we get a palindrome (61984448916).

The spelling of 11453213505 in words is "eleven billion, four hundred fifty-three million, two hundred thirteen thousand, five hundred five".