78826055790 has 32 divisors (see below), whose sum is σ = 190563438240. Its totient is φ = 20866847744.

The previous prime is 78826055773. The next prime is 78826055797. The reversal of 78826055790 is 9755062887.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 78826055790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78826055797) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9585435 + ... + 9593654.

It is an arithmetic number, because the mean of its divisors is an integer number (5955107445).

Almost surely, 2^78826055790 is an apocalyptic number.

78826055790 is an abundant number, since it is smaller than the sum of its proper divisors (111737382450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78826055790 is a wasteful number, since it uses less digits than its factorization.

78826055790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19179236.

The product of its (nonzero) digits is 8467200, while the sum is 57.

The spelling of 78826055790 in words is "seventy-eight billion, eight hundred twenty-six million, fifty-five thousand, seven hundred ninety".