6651009107 has 4 divisors (see below), whose sum is σ = 6940183440. Its totient is φ = 6361834776.

The previous prime is 6651009103. The next prime is 6651009121. The reversal of 6651009107 is 7019001566.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6651009107 - 2² = 6651009103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6651009103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144587132 + ... + 144587177.

It is an arithmetic number, because the mean of its divisors is an integer number (1735045860).

Almost surely, 2^6651009107 is an apocalyptic number.

6651009107 is a deficient number, since it is larger than the sum of its proper divisors (289174333).

6651009107 is a wasteful number, since it uses less digits than its factorization.

6651009107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289174332.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 6651009107 is about 81553.7191487917. The cubic root of 6651009107 is about 1880.5974699594.

The spelling of 6651009107 in words is "six billion, six hundred fifty-one million, nine thousand, one hundred seven".