6540555263 has 8 divisors (see below), whose sum is σ = 7141518336. Its totient is φ = 5940653400.

The previous prime is 6540555257. The next prime is 6540555277. The reversal of 6540555263 is 3625550456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6540555263 - 2⁴ = 6540555247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6540555263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540555253) 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, 252383 + ... + 277088.

It is an arithmetic number, because the mean of its divisors is an integer number (892689792).

Almost surely, 2^6540555263 is an apocalyptic number.

6540555263 is a deficient number, since it is larger than the sum of its proper divisors (600963073).

6540555263 is a wasteful number, since it uses less digits than its factorization.

6540555263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530605.

The product of its (nonzero) digits is 540000, while the sum is 41.

The square root of 6540555263 is about 80873.6994516759. The cubic root of 6540555263 is about 1870.1288922377.

The spelling of 6540555263 in words is "six billion, five hundred forty million, five hundred fifty-five thousand, two hundred sixty-three".