78255816528826 has 8 divisors (see below), whose sum is σ = 117392997579840. Its totient is φ = 39124817335548.

The previous prime is 78255816528811. The next prime is 78255816528829. The reversal of 78255816528826 is 62882561855287.

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

It is a super-2 number, since 2×78255816528826² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78255816528829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1545432786 + ... + 1545483421.

It is an arithmetic number, because the mean of its divisors is an integer number (14674124697480).

Almost surely, 2^{78255816528826} is an apocalyptic number.

78255816528826 is a deficient number, since it is larger than the sum of its proper divisors (39137181051014).

78255816528826 is a wasteful number, since it uses less digits than its factorization.

78255816528826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090928868.

The product of its digits is 1032192000, while the sum is 73.

The spelling of 78255816528826 in words is "seventy-eight trillion, two hundred fifty-five billion, eight hundred sixteen million, five hundred twenty-eight thousand, eight hundred twenty-six".