180632728944 has 160 divisors (see below), whose sum is σ = 546597396480. Its totient is φ = 57028665600.

The previous prime is 180632728933. The next prime is 180632728949. The reversal of 180632728944 is 449827236081.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180632728949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 485934 + ... + 772914.

It is an arithmetic number, because the mean of its divisors is an integer number (3416233728).

Almost surely, 2^180632728944 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 180632728944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273298698240).

180632728944 is an abundant number, since it is smaller than the sum of its proper divisors (365964667536).

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

180632728944 is a wasteful number, since it uses less digits than its factorization.

180632728944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287076 (or 287064 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 180632728944 in words is "one hundred eighty billion, six hundred thirty-two million, seven hundred twenty-eight thousand, nine hundred forty-four".