7945911911 has 16 divisors (see below), whose sum is σ = 9772856640. Its totient is φ = 6305057280.

The previous prime is 7945911899. The next prime is 7945911973. The reversal of 7945911911 is 1191195497.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7945911911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7945911991) 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, 540056 + ... + 554573.

It is an arithmetic number, because the mean of its divisors is an integer number (610803540).

Almost surely, 2^7945911911 is an apocalyptic number.

7945911911 is a deficient number, since it is larger than the sum of its proper divisors (1826944729).

7945911911 is a wasteful number, since it uses less digits than its factorization.

7945911911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094714.

The product of its digits is 102060, while the sum is 47.

The square root of 7945911911 is about 89139.8446879957. The cubic root of 7945911911 is about 1995.4824628620.

The spelling of 7945911911 in words is "seven billion, nine hundred forty-five million, nine hundred eleven thousand, nine hundred eleven".