72815525303 has 4 divisors (see below), whose sum is σ = 75164413248. Its totient is φ = 70466637360.

The previous prime is 72815525297. The next prime is 72815525323. The reversal of 72815525303 is 30352551827.

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 72815525303 - 2¹⁴ = 72815508919 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 (72815525323) 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, 1174443926 + ... + 1174443987.

It is an arithmetic number, because the mean of its divisors is an integer number (18791103312).

Almost surely, 2^72815525303 is an apocalyptic number.

72815525303 is a deficient number, since it is larger than the sum of its proper divisors (2348887945).

72815525303 is a wasteful number, since it uses less digits than its factorization.

72815525303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348887944.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 72815525303 in words is "seventy-two billion, eight hundred fifteen million, five hundred twenty-five thousand, three hundred three".