11723613528 has 96 divisors (see below), whose sum is σ = 32258479680. Its totient is φ = 3547896000.

The previous prime is 11723613497. The next prime is 11723613533. The reversal of 11723613528 is 82531632711.

It is a happy number.

It is a super-2 number, since 2×11723613528² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2631703 + ... + 2636153.

It is an arithmetic number, because the mean of its divisors is an integer number (336025830).

Almost surely, 2^11723613528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11723613528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16129239840).

11723613528 is an abundant number, since it is smaller than the sum of its proper divisors (20534866152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11723613528 is a wasteful number, since it uses less digits than its factorization.

11723613528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5389 (or 5374 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The spelling of 11723613528 in words is "eleven billion, seven hundred twenty-three million, six hundred thirteen thousand, five hundred twenty-eight".