72043459739 has 4 divisors (see below), whose sum is σ = 72299842440. Its totient is φ = 71787077040.

The previous prime is 72043459727. The next prime is 72043459781. The reversal of 72043459739 is 93795434027.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72043459739 - 2²⁴ = 72026682523 is a prime.

It is a super-3 number, since 3×72043459739³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72043459339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128190929 + ... + 128191490.

It is an arithmetic number, because the mean of its divisors is an integer number (18074960610).

Almost surely, 2^72043459739 is an apocalyptic number.

72043459739 is a deficient number, since it is larger than the sum of its proper divisors (256382701).

72043459739 is a wasteful number, since it uses less digits than its factorization.

72043459739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256382700.

The product of its (nonzero) digits is 5715360, while the sum is 53.

The spelling of 72043459739 in words is "seventy-two billion, forty-three million, four hundred fifty-nine thousand, seven hundred thirty-nine".