6491696211 has 256 divisors, whose sum is σ = 13934592000. Its totient is φ = 2874009600.

The previous prime is 6491696209. The next prime is 6491696291. The reversal of 6491696211 is 1126961946.

It is a happy number.

6491696211 is a `hidden beast` number, since 6 + 4 + 9 + 16 + 9 + 621 + 1 = 666.

It is not a de Polignac number, because 6491696211 - 2¹ = 6491696209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6491696201) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 32621490 + ... + 32621688.

It is an arithmetic number, because the mean of its divisors is an integer number (54432000).

Almost surely, 2^6491696211 is an apocalyptic number.

6491696211 is an abundant number, since it is smaller than the sum of its proper divisors (7442895789).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6491696211 is a wasteful number, since it uses less digits than its factorization.

6491696211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 321 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 6491696211 is about 80571.0631120131. The cubic root of 6491696211 is about 1865.4605221831.

The spelling of 6491696211 in words is "six billion, four hundred ninety-one million, six hundred ninety-six thousand, two hundred eleven".