6161911911 has 12 divisors (see below), whose sum is σ = 9107529288. Its totient is φ = 4012407504.

The previous prime is 6161911871. The next prime is 6161911933. The reversal of 6161911911 is 1191191616.

6161911911 is a `hidden beast` number, since 616 + 19 + 1 + 19 + 11 = 666.

It is not a de Polignac number, because 6161911911 - 2¹³ = 6161903719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161911961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7960740 + ... + 7961513.

It is an arithmetic number, because the mean of its divisors is an integer number (758960774).

Almost surely, 2^6161911911 is an apocalyptic number.

6161911911 is a deficient number, since it is larger than the sum of its proper divisors (2945617377).

6161911911 is a wasteful number, since it uses less digits than its factorization.

6161911911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15922302 (or 15922299 counting only the distinct ones).

The product of its digits is 2916, while the sum is 36.

The square root of 6161911911 is about 78497.8465373414. The cubic root of 6161911911 is about 1833.3209240556.

The spelling of 6161911911 in words is "six billion, one hundred sixty-one million, nine hundred eleven thousand, nine hundred eleven".