6550950861 has 24 divisors (see below), whose sum is σ = 11646136320. Its totient is φ = 3455446176.

The previous prime is 6550950839. The next prime is 6550950871. The reversal of 6550950861 is 1680590556.

It is a happy number.

6550950861 is a `hidden beast` number, since 6 + 550 + 95 + 0 + 8 + 6 + 1 = 666.

It is not a de Polignac number, because 6550950861 - 2⁵ = 6550950829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550950871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3998541 + ... + 4000178.

It is an arithmetic number, because the mean of its divisors is an integer number (485255680).

Almost surely, 2^6550950861 is an apocalyptic number.

It is an amenable number.

6550950861 is a deficient number, since it is larger than the sum of its proper divisors (5095185459).

6550950861 is a wasteful number, since it uses less digits than its factorization.

6550950861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7998745 (or 7998742 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 6550950861 is about 80937.9445068875. The cubic root of 6550950861 is about 1871.1191658224.

The spelling of 6550950861 in words is "six billion, five hundred fifty million, nine hundred fifty thousand, eight hundred sixty-one".