6819505545801 has 16 divisors (see below), whose sum is σ = 9792159866496. Its totient is φ = 4196597652096.

The previous prime is 6819505545757. The next prime is 6819505545817. The reversal of 6819505545801 is 1085455059186.

It is a de Polignac number, because none of the positive numbers 2^k-6819505545801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6819505545871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11486221 + ... + 12065333.

It is an arithmetic number, because the mean of its divisors is an integer number (612009991656).

Almost surely, 2^{6819505545801} is an apocalyptic number.

It is an amenable number.

6819505545801 is a deficient number, since it is larger than the sum of its proper divisors (2972654320695).

6819505545801 is a wasteful number, since it uses less digits than its factorization.

6819505545801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881072.

The product of its (nonzero) digits is 8640000, while the sum is 57.

The spelling of 6819505545801 in words is "six trillion, eight hundred nineteen billion, five hundred five million, five hundred forty-five thousand, eight hundred one".