6711921849 has 16 divisors (see below), whose sum is σ = 9278496000. Its totient is φ = 4310670336.

The previous prime is 6711921761. The next prime is 6711921857. The reversal of 6711921849 is 9481291176.

It is a de Polignac number, because none of the positive numbers 2^k-6711921849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6711921798 and 6711921807.

It is not an unprimeable number, because it can be changed into a prime (6711921859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46849 + ... + 124974.

It is an arithmetic number, because the mean of its divisors is an integer number (579906000).

Almost surely, 2^6711921849 is an apocalyptic number.

It is an amenable number.

6711921849 is a deficient number, since it is larger than the sum of its proper divisors (2566574151).

6711921849 is a wasteful number, since it uses less digits than its factorization.

6711921849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172304.

The product of its digits is 217728, while the sum is 48.

The square root of 6711921849 is about 81926.3196353895. The cubic root of 6711921849 is about 1886.3211332893.

The spelling of 6711921849 in words is "six billion, seven hundred eleven million, nine hundred twenty-one thousand, eight hundred forty-nine".