72065790539 has 8 divisors (see below), whose sum is σ = 72272417280. Its totient is φ = 71859260736.

The previous prime is 72065790529. The next prime is 72065790547. The reversal of 72065790539 is 93509756027.

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

It is a cyclic number.

It is not a de Polignac number, because 72065790539 - 2¹⁶ = 72065725003 is a prime.

It is a super-2 number, since 2×72065790539² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72065790509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1623857 + ... + 1667645.

It is an arithmetic number, because the mean of its divisors is an integer number (9034052160).

Almost surely, 2^72065790539 is an apocalyptic number.

72065790539 is a deficient number, since it is larger than the sum of its proper divisors (206626741).

72065790539 is a wasteful number, since it uses less digits than its factorization.

72065790539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48469.

The product of its (nonzero) digits is 3572100, while the sum is 53.

The spelling of 72065790539 in words is "seventy-two billion, sixty-five million, seven hundred ninety thousand, five hundred thirty-nine".