6540442334 has 16 divisors (see below), whose sum is σ = 10839404448. Its totient is φ = 2944035072.

The previous prime is 6540442331. The next prime is 6540442343. The reversal of 6540442334 is 4332440456.

It is a junction number, because it is equal to n+sod(n) for n = 6540442294 and 6540442303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540442331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4181087 + ... + 4182650.

It is an arithmetic number, because the mean of its divisors is an integer number (677462778).

Almost surely, 2^6540442334 is an apocalyptic number.

6540442334 is a deficient number, since it is larger than the sum of its proper divisors (4298962114).

6540442334 is a wasteful number, since it uses less digits than its factorization.

6540442334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8363779.

The product of its (nonzero) digits is 138240, while the sum is 35.

The square root of 6540442334 is about 80873.0012674193. The cubic root of 6540442334 is about 1870.1181289822.

The spelling of 6540442334 in words is "six billion, five hundred forty million, four hundred forty-two thousand, three hundred thirty-four".