78213723446803 has 8 divisors (see below), whose sum is σ = 89508069367040. Its totient is φ = 66949616740680.

The previous prime is 78213723446779. The next prime is 78213723446923. The reversal of 78213723446803 is 30864432731287.

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 78213723446803 - 2³⁷ = 78076284493331 is a prime.

It is a super-2 number, since 2×78213723446803² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78213723446303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7559797983 + ... + 7559808328.

It is an arithmetic number, because the mean of its divisors is an integer number (11188508670880).

Almost surely, 2^{78213723446803} is an apocalyptic number.

78213723446803 is a deficient number, since it is larger than the sum of its proper divisors (11294345920237).

78213723446803 is a wasteful number, since it uses less digits than its factorization.

78213723446803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15119607057.

The product of its (nonzero) digits is 32514048, while the sum is 58.

The spelling of 78213723446803 in words is "seventy-eight trillion, two hundred thirteen billion, seven hundred twenty-three million, four hundred forty-six thousand, eight hundred three".