72649732673 has 8 divisors (see below), whose sum is σ = 83074742592. Its totient is φ = 62236341936.

The previous prime is 72649732663. The next prime is 72649732697. The reversal of 72649732673 is 37623794627.

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

It is a cyclic number.

It is not a de Polignac number, because 72649732673 - 2⁴ = 72649732657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72649732643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2891390 + ... + 2916407.

It is an arithmetic number, because the mean of its divisors is an integer number (10384342824).

Almost surely, 2^72649732673 is an apocalyptic number.

It is an amenable number.

72649732673 is a deficient number, since it is larger than the sum of its proper divisors (10425009919).

72649732673 is a wasteful number, since it uses less digits than its factorization.

72649732673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5809591.

The product of its digits is 16003008, while the sum is 56.

The spelling of 72649732673 in words is "seventy-two billion, six hundred forty-nine million, seven hundred thirty-two thousand, six hundred seventy-three".