6551899278 has 32 divisors (see below), whose sum is σ = 13677866496. Its totient is φ = 2088348768.

The previous prime is 6551899271. The next prime is 6551899309. The reversal of 6551899278 is 8729981556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551899271) 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 15 ways as a sum of consecutive naturals, for example, 614751 + ... + 625317.

It is an arithmetic number, because the mean of its divisors is an integer number (427433328).

Almost surely, 2^6551899278 is an apocalyptic number.

6551899278 is an abundant number, since it is smaller than the sum of its proper divisors (7125967218).

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

6551899278 is a wasteful number, since it uses less digits than its factorization.

6551899278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15088.

The product of its digits is 10886400, while the sum is 60.

The square root of 6551899278 is about 80943.8032093872. The cubic root of 6551899278 is about 1871.2094588516.

The spelling of 6551899278 in words is "six billion, five hundred fifty-one million, eight hundred ninety-nine thousand, two hundred seventy-eight".