6401928611 has 8 divisors (see below), whose sum is σ = 7132122480. Its totient is φ = 5705697312.

The previous prime is 6401928521. The next prime is 6401928613. The reversal of 6401928611 is 1168291046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6401928611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6401928613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8490245 + ... + 8490998.

It is an arithmetic number, because the mean of its divisors is an integer number (891515310).

Almost surely, 2^6401928611 is an apocalyptic number.

6401928611 is a deficient number, since it is larger than the sum of its proper divisors (730193869).

6401928611 is a wasteful number, since it uses less digits than its factorization.

6401928611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16981285.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 6401928611 is about 80012.0529107959. The cubic root of 6401928611 is about 1856.8220109500.

The spelling of 6401928611 in words is "six billion, four hundred one million, nine hundred twenty-eight thousand, six hundred eleven".