78516433 has 4 divisors (see below), whose sum is σ = 79847280. Its totient is φ = 77185588.

The previous prime is 78516419. The next prime is 78516437. The reversal of 78516433 is 33461587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33461587 = 3023 ⋅11069.

It is a cyclic number.

It is not a de Polignac number, because 78516433 - 2¹⁷ = 78385361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78516392 and 78516401.

It is not an unprimeable number, because it can be changed into a prime (78516437) 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 3 ways as a sum of consecutive naturals, for example, 665335 + ... + 665452.

It is an arithmetic number, because the mean of its divisors is an integer number (19961820).

Almost surely, 2^78516433 is an apocalyptic number.

It is an amenable number.

78516433 is a deficient number, since it is larger than the sum of its proper divisors (1330847).

78516433 is a wasteful number, since it uses less digits than its factorization.

78516433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330846.

The product of its digits is 60480, while the sum is 37.

The square root of 78516433 is about 8860.9498926470. The cubic root of 78516433 is about 428.2067613253.

The spelling of 78516433 in words is "seventy-eight million, five hundred sixteen thousand, four hundred thirty-three".