7051826778 has 16 divisors (see below), whose sum is σ = 14106218880. Its totient is φ = 2350181376.

The previous prime is 7051826759. The next prime is 7051826779. The reversal of 7051826778 is 8776281507.

7051826778 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7051826778² = 99456521813835722568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7051826778.

It is not an unprimeable number, because it can be changed into a prime (7051826779) 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, 70183 + ... + 137946.

It is an arithmetic number, because the mean of its divisors is an integer number (881638680).

Almost surely, 2^7051826778 is an apocalyptic number.

7051826778 is an abundant number, since it is smaller than the sum of its proper divisors (7054392102).

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

7051826778 is a wasteful number, since it uses less digits than its factorization.

7051826778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213781.

The product of its (nonzero) digits is 1317120, while the sum is 51.

The square root of 7051826778 is about 83975.1557188196. The cubic root of 7051826778 is about 1917.6405821455.

The spelling of 7051826778 in words is "seven billion, fifty-one million, eight hundred twenty-six thousand, seven hundred seventy-eight".