72380785017 has 16 divisors (see below), whose sum is σ = 98372102400. Its totient is φ = 47322467712.

The previous prime is 72380785003. The next prime is 72380785039. The reversal of 72380785017 is 71058708327.

It is not a de Polignac number, because 72380785017 - 2¹⁸ = 72380522873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72380775017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264109 + ... + 463157.

It is an arithmetic number, because the mean of its divisors is an integer number (6148256400).

Almost surely, 2^72380785017 is an apocalyptic number.

It is an amenable number.

72380785017 is a deficient number, since it is larger than the sum of its proper divisors (25991317383).

72380785017 is a wasteful number, since it uses less digits than its factorization.

72380785017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201392.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 72380785017 in words is "seventy-two billion, three hundred eighty million, seven hundred eighty-five thousand, seventeen".