72049723439 has 8 divisors (see below), whose sum is σ = 72647397888. Its totient is φ = 71452523520.

The previous prime is 72049723429. The next prime is 72049723477. The reversal of 72049723439 is 93432794027.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72049723439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72049723429) by changing a digit.

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, 189599 + ... + 424319.

It is an arithmetic number, because the mean of its divisors is an integer number (9080924736).

Almost surely, 2^72049723439 is an apocalyptic number.

72049723439 is a deficient number, since it is larger than the sum of its proper divisors (597674449).

72049723439 is a wasteful number, since it uses less digits than its factorization.

72049723439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237265.

The product of its (nonzero) digits is 2286144, while the sum is 50.

The spelling of 72049723439 in words is "seventy-two billion, forty-nine million, seven hundred twenty-three thousand, four hundred thirty-nine".