72817614667 has 8 divisors (see below), whose sum is σ = 83259090656. Its totient is φ = 62385878592.

The previous prime is 72817614637. The next prime is 72817614671. The reversal of 72817614667 is 76641671827.

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 72817614667 - 2¹⁵ = 72817581899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72817614637) 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, 2418948 + ... + 2448865.

It is an arithmetic number, because the mean of its divisors is an integer number (10407386332).

Almost surely, 2^72817614667 is an apocalyptic number.

72817614667 is a deficient number, since it is larger than the sum of its proper divisors (10441475989).

72817614667 is a wasteful number, since it uses less digits than its factorization.

72817614667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4869957.

The product of its digits is 4741632, while the sum is 55.

The spelling of 72817614667 in words is "seventy-two billion, eight hundred seventeen million, six hundred fourteen thousand, six hundred sixty-seven".