78826055791 has 8 divisors (see below), whose sum is σ = 94003743744. Its totient is φ = 64627573560.

The previous prime is 78826055773. The next prime is 78826055797. The reversal of 78826055791 is 19755062887.

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

It is a cyclic number.

It is not a de Polignac number, because 78826055791 - 2¹¹ = 78826053743 is a prime.

It is a Duffinian number.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244801255 + ... + 244801576.

It is an arithmetic number, because the mean of its divisors is an integer number (11750467968).

Almost surely, 2^78826055791 is an apocalyptic number.

78826055791 is a deficient number, since it is larger than the sum of its proper divisors (15177687953).

78826055791 is a wasteful number, since it uses less digits than its factorization.

78826055791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489602861.

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 78826055791 in words is "seventy-eight billion, eight hundred twenty-six million, fifty-five thousand, seven hundred ninety-one".