78166041 has 8 divisors (see below), whose sum is σ = 104262624. Its totient is φ = 52090080.

The previous prime is 78166031. The next prime is 78166063. The reversal of 78166041 is 14066187.

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 78166041 - 2⁵ = 78166009 is a prime.

It is a super-2 number, since 2×78166041² = 12219859931227362, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78165993 and 78166011.

It is not an unprimeable number, because it can be changed into a prime (78166001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10390 + ... + 16256.

It is an arithmetic number, because the mean of its divisors is an integer number (13032828).

Almost surely, 2^78166041 is an apocalyptic number.

It is an amenable number.

78166041 is a deficient number, since it is larger than the sum of its proper divisors (26096583).

78166041 is a wasteful number, since it uses less digits than its factorization.

78166041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10311.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 78166041 is about 8841.1560895620. The cubic root of 78166041 is about 427.5688312958.

The spelling of 78166041 in words is "seventy-eight million, one hundred sixty-six thousand, forty-one".