78534540206 has 8 divisors (see below), whose sum is σ = 117875029440. Its totient is φ = 39242863728.

The previous prime is 78534540179. The next prime is 78534540209. The reversal of 78534540206 is 60204543587.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78534540209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12199166 + ... + 12205601.

It is an arithmetic number, because the mean of its divisors is an integer number (14734378680).

Almost surely, 2^78534540206 is an apocalyptic number.

78534540206 is a deficient number, since it is larger than the sum of its proper divisors (39340489234).

78534540206 is a wasteful number, since it uses less digits than its factorization.

78534540206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24406378.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 78534540206 in words is "seventy-eight billion, five hundred thirty-four million, five hundred forty thousand, two hundred six".