72800785137 has 8 divisors (see below), whose sum is σ = 97069042336. Its totient is φ = 48533192352.

The previous prime is 72800785133. The next prime is 72800785177. The reversal of 72800785137 is 73158700827.

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

It is not a de Polignac number, because 72800785137 - 2² = 72800785133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72800785133) 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, 213498 + ... + 437244.

It is an arithmetic number, because the mean of its divisors is an integer number (12133630292).

Almost surely, 2^72800785137 is an apocalyptic number.

It is an amenable number.

72800785137 is a deficient number, since it is larger than the sum of its proper divisors (24268257199).

72800785137 is a wasteful number, since it uses less digits than its factorization.

72800785137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332207.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 72800785137 in words is "seventy-two billion, eight hundred million, seven hundred eighty-five thousand, one hundred thirty-seven".