7911168540 has 96 divisors (see below), whose sum is σ = 24179662080. Its totient is φ = 1916697600.

The previous prime is 7911168511. The next prime is 7911168541. The reversal of 7911168540 is 458611197.

It is a junction number, because it is equal to n+sod(n) for n = 7911168492 and 7911168501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7911168541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1673380 + ... + 1678100.

It is an arithmetic number, because the mean of its divisors is an integer number (251871480).

Almost surely, 2^7911168540 is an apocalyptic number.

It is an amenable number.

7911168540 is an abundant number, since it is smaller than the sum of its proper divisors (16268493540).

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

7911168540 is a wasteful number, since it uses less digits than its factorization.

7911168540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7283 (or 7281 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 7911168540 is about 88944.7499293803. The cubic root of 7911168540 is about 1992.5698086452.

The spelling of 7911168540 in words is "seven billion, nine hundred eleven million, one hundred sixty-eight thousand, five hundred forty".