78508526834 has 16 divisors (see below), whose sum is σ = 117920315160. Its totient is φ = 39201790080.

The previous prime is 78508526801. The next prime is 78508526881. The reversal of 78508526834 is 43862580587.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 74882680609 + 3625846225 = 273647^2 + 60215^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78508526834.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5635862 + ... + 5649774.

Almost surely, 2^78508526834 is an apocalyptic number.

78508526834 is a deficient number, since it is larger than the sum of its proper divisors (39411788326).

78508526834 is a wasteful number, since it uses less digits than its factorization.

78508526834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17485.

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 78508526834 in words is "seventy-eight billion, five hundred eight million, five hundred twenty-six thousand, eight hundred thirty-four".