6651419691 has 48 divisors (see below), whose sum is σ = 10443713280. Its totient is φ = 3754175040.

The previous prime is 6651419669. The next prime is 6651419701. The reversal of 6651419691 is 1969141566.

It is not a de Polignac number, because 6651419691 - 2¹³ = 6651411499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6651419691.

It is not an unprimeable number, because it can be changed into a prime (6651411691) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9148770 + ... + 9149496.

It is an arithmetic number, because the mean of its divisors is an integer number (217577360).

Almost surely, 2^6651419691 is an apocalyptic number.

6651419691 is a deficient number, since it is larger than the sum of its proper divisors (3792293589).

6651419691 is a wasteful number, since it uses less digits than its factorization.

6651419691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1417 counting only the distinct ones).

The product of its digits is 349920, while the sum is 48.

The square root of 6651419691 is about 81556.2363709851. The cubic root of 6651419691 is about 1880.6361672123.

The spelling of 6651419691 in words is "six billion, six hundred fifty-one million, four hundred nineteen thousand, six hundred ninety-one".