72317606451 has 8 divisors (see below), whose sum is σ = 96429057984. Its totient is φ = 48208946280.

The previous prime is 72317606441. The next prime is 72317606477. The reversal of 72317606451 is 15460671327.

It is a happy number.

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

It is not a de Polignac number, because 72317606451 - 2¹⁰ = 72317605427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72317606401) 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, 636621 + ... + 741566.

It is an arithmetic number, because the mean of its divisors is an integer number (12053632248).

Almost surely, 2^72317606451 is an apocalyptic number.

72317606451 is a deficient number, since it is larger than the sum of its proper divisors (24111451533).

72317606451 is a wasteful number, since it uses less digits than its factorization.

72317606451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395681.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 72317606451 in words is "seventy-two billion, three hundred seventeen million, six hundred six thousand, four hundred fifty-one".