72335685647 has 8 divisors (see below), whose sum is σ = 74312300832. Its totient is φ = 70360207200.

The previous prime is 72335685637. The next prime is 72335685649. The reversal of 72335685647 is 74658653327.

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 72335685647 - 2¹⁶ = 72335620111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72335685592 and 72335685601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72335685649) 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, 154379 + ... + 410492.

It is an arithmetic number, because the mean of its divisors is an integer number (9289037604).

Almost surely, 2^72335685647 is an apocalyptic number.

72335685647 is a deficient number, since it is larger than the sum of its proper divisors (1976615185).

72335685647 is a wasteful number, since it uses less digits than its factorization.

72335685647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568369.

The product of its digits is 25401600, while the sum is 56.

The spelling of 72335685647 in words is "seventy-two billion, three hundred thirty-five million, six hundred eighty-five thousand, six hundred forty-seven".