11523790511 has 8 divisors (see below), whose sum is σ = 11628257184. Its totient is φ = 11419367680.

The previous prime is 11523790451. The next prime is 11523790559. The reversal of 11523790511 is 11509732511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11523790511 is a prime.

It is a super-2 number, since 2×11523790511² (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 (11523790571) 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, 759875 + ... + 774891.

It is an arithmetic number, because the mean of its divisors is an integer number (1453532148).

Almost surely, 2^11523790511 is an apocalyptic number.

11523790511 is a deficient number, since it is larger than the sum of its proper divisors (104466673).

11523790511 is a wasteful number, since it uses less digits than its factorization.

11523790511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21921.

The product of its (nonzero) digits is 9450, while the sum is 35.

The spelling of 11523790511 in words is "eleven billion, five hundred twenty-three million, seven hundred ninety thousand, five hundred eleven".