6779481138546 has 64 divisors (see below), whose sum is σ = 14637201811200. Its totient is φ = 2086916792576.

The previous prime is 6779481138491. The next prime is 6779481138559. The reversal of 6779481138546 is 6458311849776.

It is a super-2 number, since 2×6779481138546² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 90844120 + ... + 90918716.

It is an arithmetic number, because the mean of its divisors is an integer number (228706278300).

Almost surely, 2^{6779481138546} is an apocalyptic number.

6779481138546 is an abundant number, since it is smaller than the sum of its proper divisors (7857720672654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6779481138546 is a wasteful number, since it uses less digits than its factorization.

6779481138546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97363.

The product of its digits is 243855360, while the sum is 69.

The spelling of 6779481138546 in words is "six trillion, seven hundred seventy-nine billion, four hundred eighty-one million, one hundred thirty-eight thousand, five hundred forty-six".