11722517129 has 16 divisors (see below), whose sum is σ = 12016804800. Its totient is φ = 11431699776.

The previous prime is 11722517123. The next prime is 11722517143. The reversal of 11722517129 is 92171522711.

It is a cyclic number.

It is not a de Polignac number, because 11722517129 - 2⁴ = 11722517113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11722517092 and 11722517101.

It is not an unprimeable number, because it can be changed into a prime (11722517123) 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, 8202587 + ... + 8204015.

It is an arithmetic number, because the mean of its divisors is an integer number (751050300).

Almost surely, 2^11722517129 is an apocalyptic number.

It is an amenable number.

11722517129 is a deficient number, since it is larger than the sum of its proper divisors (294287671).

11722517129 is a wasteful number, since it uses less digits than its factorization.

11722517129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its digits is 17640, while the sum is 38.

The spelling of 11722517129 in words is "eleven billion, seven hundred twenty-two million, five hundred seventeen thousand, one hundred twenty-nine".