78333161 has 24 divisors (see below), whose sum is σ = 87237120. Its totient is φ = 70267392.

The previous prime is 78333139. The next prime is 78333163. The reversal of 78333161 is 16133387.

It is not a de Polignac number, because 78333161 - 2⁶ = 78333097 is a prime.

It is a super-2 number, since 2×78333161² = 12272168224503842, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (9072) is a multiple of the sum of its prime divisors (216).

It is not an unprimeable number, because it can be changed into a prime (78333163) 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 23 ways as a sum of consecutive naturals, for example, 991520 + ... + 991598.

It is an arithmetic number, because the mean of its divisors is an integer number (3634880).

Almost surely, 2^78333161 is an apocalyptic number.

It is an amenable number.

78333161 is a deficient number, since it is larger than the sum of its proper divisors (8903959).

78333161 is a wasteful number, since it uses less digits than its factorization.

78333161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 216 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 78333161 is about 8850.6022958892. The cubic root of 78333161 is about 427.8733302762.

The spelling of 78333161 in words is "seventy-eight million, three hundred thirty-three thousand, one hundred sixty-one".