6485542141805 has 8 divisors (see below), whose sum is σ = 7782890253432. Its totient is φ = 5188273924608.

The previous prime is 6485542141781. The next prime is 6485542141817. The reversal of 6485542141805 is 5081412455846.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3284946003364 + 3200596138441 = 1812442^2 + 1789021^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6485542141805 - 2³⁴ = 6468362272621 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 7 ways as a sum of consecutive naturals, for example, 19794872 + ... + 20119841.

It is an arithmetic number, because the mean of its divisors is an integer number (972861281679).

Almost surely, 2^{6485542141805} is an apocalyptic number.

It is an amenable number.

6485542141805 is a deficient number, since it is larger than the sum of its proper divisors (1297348111627).

6485542141805 is a wasteful number, since it uses less digits than its factorization.

6485542141805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39947215.

The product of its (nonzero) digits is 6144000, while the sum is 53.

The spelling of 6485542141805 in words is "six trillion, four hundred eighty-five billion, five hundred forty-two million, one hundred forty-one thousand, eight hundred five".