78538459835 has 32 divisors (see below), whose sum is σ = 109043020800. Its totient is φ = 53739734400.

The previous prime is 78538459823. The next prime is 78538459841. The reversal of 78538459835 is 53895483587.

It is not a de Polignac number, because 78538459835 - 2¹² = 78538455739 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 431735 + ... + 586064.

It is an arithmetic number, because the mean of its divisors is an integer number (3407594400).

Almost surely, 2^78538459835 is an apocalyptic number.

78538459835 is a deficient number, since it is larger than the sum of its proper divisors (30504560965).

78538459835 is a wasteful number, since it uses less digits than its factorization.

78538459835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017899.

The product of its digits is 145152000, while the sum is 65.

The spelling of 78538459835 in words is "seventy-eight billion, five hundred thirty-eight million, four hundred fifty-nine thousand, eight hundred thirty-five".