11523216676520 has 64 divisors (see below), whose sum is σ = 26577713682000. Its totient is φ = 4495065366528.

The previous prime is 11523216676471. The next prime is 11523216676591. The reversal of 11523216676520 is 2567661232511.

It can be written as a sum of positive squares in 8 ways, for example, as 3437531067364 + 8085685609156 = 1854058^2 + 2843534^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21910385 + ... + 22430144.

Almost surely, 2^{11523216676520} is an apocalyptic number.

11523216676520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11523216676520 is an abundant number, since it is smaller than the sum of its proper divisors (15054497005480).

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

11523216676520 is a wasteful number, since it uses less digits than its factorization.

11523216676520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44340702 (or 44340698 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 11523216676520 in words is "eleven trillion, five hundred twenty-three billion, two hundred sixteen million, six hundred seventy-six thousand, five hundred twenty".