72319858903 has 4 divisors (see below), whose sum is σ = 72410599800. Its totient is φ = 72229118008.

The previous prime is 72319858889. The next prime is 72319858921. The reversal of 72319858903 is 30985891327.

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 72319858903 - 2¹³ = 72319850711 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 (72319858993) 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, 45369253 + ... + 45370846.

It is an arithmetic number, because the mean of its divisors is an integer number (18102649950).

Almost surely, 2^72319858903 is an apocalyptic number.

72319858903 is a deficient number, since it is larger than the sum of its proper divisors (90740897).

72319858903 is an equidigital number, since it uses as much as digits as its factorization.

72319858903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90740896.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 72319858903 in words is "seventy-two billion, three hundred nineteen million, eight hundred fifty-eight thousand, nine hundred three".