6786728550 has 144 divisors (see below), whose sum is σ = 20869042272. Its totient is φ = 1548979200.

The previous prime is 6786728549. The next prime is 6786728551. The reversal of 6786728550 is 558276876.

6786728550 is a `hidden beast` number, since 6 + 7 + 8 + 67 + 28 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (6786728549) and next prime (6786728551).

It is a super-2 number, since 2×6786728550² = 92119368822770205000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6786728551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3139470 + ... + 3141630.

Almost surely, 2^6786728550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6786728550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10434521136).

6786728550 is an abundant number, since it is smaller than the sum of its proper divisors (14082313722).

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

6786728550 is a wasteful number, since it uses less digits than its factorization.

6786728550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183 (or 3175 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The square root of 6786728550 is about 82381.6032254775. The cubic root of 6786728550 is about 1893.3031596133.

The spelling of 6786728550 in words is "six billion, seven hundred eighty-six million, seven hundred twenty-eight thousand, five hundred fifty".