78008546623 has 4 divisors (see below), whose sum is σ = 89152624720. Its totient is φ = 66864468528.

The previous prime is 78008546587. The next prime is 78008546641. The reversal of 78008546623 is 32664580087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32664580087 = 463 ⋅70549849.

It is a cyclic number.

It is not a de Polignac number, because 78008546623 - 2³³ = 69418612031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78008246623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5572039038 + ... + 5572039051.

It is an arithmetic number, because the mean of its divisors is an integer number (22288156180).

Almost surely, 2^78008546623 is an apocalyptic number.

78008546623 is a deficient number, since it is larger than the sum of its proper divisors (11144078097).

78008546623 is a wasteful number, since it uses less digits than its factorization.

78008546623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11144078096.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 78008546623 in words is "seventy-eight billion, eight million, five hundred forty-six thousand, six hundred twenty-three".