6851356550 has 12 divisors (see below), whose sum is σ = 12743523276. Its totient is φ = 2740542600.

The previous prime is 6851356549. The next prime is 6851356571. The reversal of 6851356550 is 556531586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68513516 + ... + 68513615.

It is an arithmetic number, because the mean of its divisors is an integer number (1061960273).

Almost surely, 2^6851356550 is an apocalyptic number.

6851356550 is a deficient number, since it is larger than the sum of its proper divisors (5892166726).

6851356550 is a wasteful number, since it uses less digits than its factorization.

6851356550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137027143 (or 137027138 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 44.

The square root of 6851356550 is about 82772.9215987934. The cubic root of 6851356550 is about 1899.2939712868.

The spelling of 6851356550 in words is "six billion, eight hundred fifty-one million, three hundred fifty-six thousand, five hundred fifty".