11667213247 has 16 divisors (see below), whose sum is σ = 12120539328. Its totient is φ = 11224362240.

The previous prime is 11667213211. The next prime is 11667213323. The reversal of 11667213247 is 74231276611.

It is a cyclic number.

It is not a de Polignac number, because 11667213247 - 2¹⁵ = 11667180479 is a prime.

It is a super-2 number, since 2×11667213247² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11667283247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660622 + ... + 678052.

It is an arithmetic number, because the mean of its divisors is an integer number (757533708).

Almost surely, 2^11667213247 is an apocalyptic number.

11667213247 is a deficient number, since it is larger than the sum of its proper divisors (453326081).

11667213247 is a wasteful number, since it uses less digits than its factorization.

11667213247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17730.

The product of its digits is 84672, while the sum is 40.

Adding to 11667213247 its reverse (74231276611), we get a palindrome (85898489858).

The spelling of 11667213247 in words is "eleven billion, six hundred sixty-seven million, two hundred thirteen thousand, two hundred forty-seven".