11722550537 has 8 divisors (see below), whose sum is σ = 11756275200. Its totient is φ = 11688869920.

The previous prime is 11722550443. The next prime is 11722550551. The reversal of 11722550537 is 73505522711.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11722550537 - 2¹⁰ = 11722549513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11722550537.

It is not an unprimeable number, because it can be changed into a prime (11722550597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564464 + ... + 584862.

It is an arithmetic number, because the mean of its divisors is an integer number (1469534400).

Almost surely, 2^11722550537 is an apocalyptic number.

It is an amenable number.

11722550537 is a deficient number, since it is larger than the sum of its proper divisors (33724663).

11722550537 is a wasteful number, since it uses less digits than its factorization.

11722550537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22023.

The product of its (nonzero) digits is 73500, while the sum is 38.

The spelling of 11722550537 in words is "eleven billion, seven hundred twenty-two million, five hundred fifty thousand, five hundred thirty-seven".