11522697312 has 288 divisors, whose sum is σ = 36100753920. Its totient is φ = 3207859200.

The previous prime is 11522697259. The next prime is 11522697323. The reversal of 11522697312 is 21379622511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37533063 + ... + 37533369.

It is an arithmetic number, because the mean of its divisors is an integer number (125349840).

Almost surely, 2^11522697312 is an apocalyptic number.

11522697312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11522697312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18050376960).

11522697312 is an abundant number, since it is smaller than the sum of its proper divisors (24578056608).

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

11522697312 is a wasteful number, since it uses less digits than its factorization.

11522697312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 499 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The spelling of 11522697312 in words is "eleven billion, five hundred twenty-two million, six hundred ninety-seven thousand, three hundred twelve".