72140470665 has 8 divisors (see below), whose sum is σ = 115424753088. Its totient is φ = 38474917680.

The previous prime is 72140470637. The next prime is 72140470679. The reversal of 72140470665 is 56607404127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72140470665 - 2¹⁰ = 72140469641 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2404682341 + ... + 2404682370.

It is an arithmetic number, because the mean of its divisors is an integer number (14428094136).

Almost surely, 2^72140470665 is an apocalyptic number.

It is an amenable number.

72140470665 is a deficient number, since it is larger than the sum of its proper divisors (43284282423).

72140470665 is a wasteful number, since it uses less digits than its factorization.

72140470665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4809364719.

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 72140470665 in words is "seventy-two billion, one hundred forty million, four hundred seventy thousand, six hundred sixty-five".