6651611051 has 4 divisors (see below), whose sum is σ = 6652087152. Its totient is φ = 6651134952.

The previous prime is 6651611041. The next prime is 6651611077. The reversal of 6651611051 is 1501161566.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6651611051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6651610999 and 6651611017.

It is not an unprimeable number, because it can be changed into a prime (6651611041) 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 3 ways as a sum of consecutive naturals, for example, 216440 + ... + 245253.

It is an arithmetic number, because the mean of its divisors is an integer number (1663021788).

Almost surely, 2^6651611051 is an apocalyptic number.

6651611051 is a deficient number, since it is larger than the sum of its proper divisors (476101).

6651611051 is a wasteful number, since it uses less digits than its factorization.

6651611051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476100.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 6651611051 is about 81557.4095407646. The cubic root of 6651611051 is about 1880.6542022135.

The spelling of 6651611051 in words is "six billion, six hundred fifty-one million, six hundred eleven thousand, fifty-one".