6541811485 has 16 divisors (see below), whose sum is σ = 8566742592. Its totient is φ = 4756060800.

The previous prime is 6541811477. The next prime is 6541811491. The reversal of 6541811485 is 5841181456.

It is not a de Polignac number, because 6541811485 - 2³ = 6541811477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156625 + ... + 193945.

It is an arithmetic number, because the mean of its divisors is an integer number (535421412).

Almost surely, 2^6541811485 is an apocalyptic number.

It is an amenable number.

6541811485 is a deficient number, since it is larger than the sum of its proper divisors (2024931107).

6541811485 is a wasteful number, since it uses less digits than its factorization.

6541811485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40524.

The product of its digits is 153600, while the sum is 43.

The square root of 6541811485 is about 80881.4656457213. The cubic root of 6541811485 is about 1870.2486143189.

The spelling of 6541811485 in words is "six billion, five hundred forty-one million, eight hundred eleven thousand, four hundred eighty-five".