72150065615 has 8 divisors (see below), whose sum is σ = 86664061728. Its totient is φ = 57664063840.

The previous prime is 72150065513. The next prime is 72150065651. The reversal of 72150065615 is 51656005127.

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

It is not a de Polignac number, because 72150065615 - 2¹² = 72150061519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6992912 + ... + 7003221.

It is an arithmetic number, because the mean of its divisors is an integer number (10833007716).

Almost surely, 2^72150065615 is an apocalyptic number.

72150065615 is a deficient number, since it is larger than the sum of its proper divisors (14513996113).

72150065615 is a wasteful number, since it uses less digits than its factorization.

72150065615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13997169.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 72150065615 in words is "seventy-two billion, one hundred fifty million, sixty-five thousand, six hundred fifteen".