78389675533 has 8 divisors (see below), whose sum is σ = 85239260288. Its totient is φ = 71657177904.

The previous prime is 78389675491. The next prime is 78389675557. The reversal of 78389675533 is 33557698387.

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

It is not a de Polignac number, because 78389675533 - 2¹³ = 78389667341 is a prime.

It is a super-3 number, since 3×78389675533³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78389675593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29270385 + ... + 29273062.

It is an arithmetic number, because the mean of its divisors is an integer number (10654907536).

Almost surely, 2^78389675533 is an apocalyptic number.

It is an amenable number.

78389675533 is a deficient number, since it is larger than the sum of its proper divisors (6849584755).

78389675533 is a wasteful number, since it uses less digits than its factorization.

78389675533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58543563.

The product of its digits is 114307200, while the sum is 64.

The spelling of 78389675533 in words is "seventy-eight billion, three hundred eighty-nine million, six hundred seventy-five thousand, five hundred thirty-three".