72438384147 has 4 divisors (see below), whose sum is σ = 96584512200. Its totient is φ = 48292256096.

The previous prime is 72438384119. The next prime is 72438384173. The reversal of 72438384147 is 74148383427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74148383427 = 3 ⋅24716127809.

It is a cyclic number.

It is not a de Polignac number, because 72438384147 - 2¹¹ = 72438382099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72438384147.

It is not an unprimeable number, because it can be changed into a prime (72438382147) 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, 12073064022 + ... + 12073064027.

It is an arithmetic number, because the mean of its divisors is an integer number (24146128050).

Almost surely, 2^72438384147 is an apocalyptic number.

72438384147 is a deficient number, since it is larger than the sum of its proper divisors (24146128053).

72438384147 is a wasteful number, since it uses less digits than its factorization.

72438384147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24146128052.

The product of its digits is 3612672, while the sum is 51.

The spelling of 72438384147 in words is "seventy-two billion, four hundred thirty-eight million, three hundred eighty-four thousand, one hundred forty-seven".