72550108319 has 4 divisors (see below), whose sum is σ = 78130885896. Its totient is φ = 66969330744.

The previous prime is 72550108313. The next prime is 72550108331. The reversal of 72550108319 is 91380105527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91380105527 = 8543 ⋅10696489.

It is a cyclic number.

It is not a de Polignac number, because 72550108319 - 2⁸ = 72550108063 is a prime.

It is a super-2 number, since 2×72550108319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72550108313) 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, 2790388769 + ... + 2790388794.

It is an arithmetic number, because the mean of its divisors is an integer number (19532721474).

Almost surely, 2^72550108319 is an apocalyptic number.

72550108319 is a deficient number, since it is larger than the sum of its proper divisors (5580777577).

72550108319 is a wasteful number, since it uses less digits than its factorization.

72550108319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580777576.

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 72550108319 in words is "seventy-two billion, five hundred fifty million, one hundred eight thousand, three hundred nineteen".