11523180528 has 80 divisors (see below), whose sum is σ = 33484240800. Its totient is φ = 3841048512.

The previous prime is 11523180497. The next prime is 11523180587. The reversal of 11523180528 is 82508132511.

11523180528 is a `hidden beast` number, since 1 + 1 + 52 + 3 + 1 + 80 + 528 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11523180492 and 11523180501.

It is a congruent number.

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, 129663 + ... + 199646.

It is an arithmetic number, because the mean of its divisors is an integer number (418553010).

Almost surely, 2^11523180528 is an apocalyptic number.

11523180528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11523180528 is an abundant number, since it is smaller than the sum of its proper divisors (21961060272).

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

11523180528 is an frugal number, since it uses more digits than its factorization.

11523180528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329338 (or 329314 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 11523180528 in words is "eleven billion, five hundred twenty-three million, one hundred eighty thousand, five hundred twenty-eight".