87443072272 has 20 divisors (see below), whose sum is σ = 169430054220. Its totient is φ = 43719187328.

The previous prime is 87443072251. The next prime is 87443072279. The reversal of 87443072272 is 27227034478.

It can be written as a sum of positive squares in 2 ways, for example, as 69276345616 + 18166726656 = 263204^2 + 134784^2 .

It is not an unprimeable number, because it can be changed into a prime (87443072279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182754 + ... + 456382.

It is an arithmetic number, because the mean of its divisors is an integer number (8471502711).

Almost surely, 2^87443072272 is an apocalyptic number.

It is an amenable number.

87443072272 is a deficient number, since it is larger than the sum of its proper divisors (81986981948).

87443072272 is a wasteful number, since it uses less digits than its factorization.

87443072272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293610 (or 293604 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 46.

The spelling of 87443072272 in words is "eighty-seven billion, four hundred forty-three million, seventy-two thousand, two hundred seventy-two".