6540242179 has 4 divisors (see below), whose sum is σ = 6540461200. Its totient is φ = 6540023160.

The previous prime is 6540242171. The next prime is 6540242221. The reversal of 6540242179 is 9712420456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6540242179 - 2³ = 6540242171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6540242171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56004 + ... + 127345.

It is an arithmetic number, because the mean of its divisors is an integer number (1635115300).

Almost surely, 2^6540242179 is an apocalyptic number.

6540242179 is a deficient number, since it is larger than the sum of its proper divisors (219021).

6540242179 is a wasteful number, since it uses less digits than its factorization.

6540242179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219020.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 6540242179 is about 80871.7637930570. The cubic root of 6540242179 is about 1870.0990519181.

The spelling of 6540242179 in words is "six billion, five hundred forty million, two hundred forty-two thousand, one hundred seventy-nine".