180523440552 has 192 divisors, whose sum is σ = 583615065600. Its totient is φ = 46074631680.

The previous prime is 180523440511. The next prime is 180523440599. The reversal of 180523440552 is 255044325081.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 180523440552.

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, 283474 + ... + 664382.

It is an arithmetic number, because the mean of its divisors is an integer number (3039661800).

Almost surely, 2^180523440552 is an apocalyptic number.

180523440552 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 180523440552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291807532800).

180523440552 is an abundant number, since it is smaller than the sum of its proper divisors (403091625048).

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

180523440552 is a wasteful number, since it uses less digits than its factorization.

180523440552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380976 (or 380965 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 180523440552 in words is "one hundred eighty billion, five hundred twenty-three million, four hundred forty thousand, five hundred fifty-two".