72144570489616 has 45 divisors (see below), whose sum is σ = 140110875170119. Its totient is φ = 35987126446112.

The previous prime is 72144570489601. The next prime is 72144570489637. The reversal of 72144570489616 is 61698407544127.

The square root of 72144570489616 is 8493796.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×72144570489616² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15866408655 + ... + 15866413201.

Almost surely, 2^{72144570489616} is an apocalyptic number.

72144570489616 is the 8493796-th square number.

It is an amenable number.

72144570489616 is a deficient number, since it is larger than the sum of its proper divisors (67966304680503).

72144570489616 is an frugal number, since it uses more digits than its factorization.

72144570489616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10036 (or 5016 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 72144570489616 in words is "seventy-two trillion, one hundred forty-four billion, five hundred seventy million, four hundred eighty-nine thousand, six hundred sixteen".