6774516484581 has 4 divisors (see below), whose sum is σ = 9032688646112. Its totient is φ = 4516344323052.

The previous prime is 6774516484573. The next prime is 6774516484597. The reversal of 6774516484581 is 1854846154776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6774516484581 - 2³ = 6774516484573 is a prime.

It is a super-2 number, since 2×6774516484581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6774516484531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129086080761 + ... + 1129086080766.

It is an arithmetic number, because the mean of its divisors is an integer number (2258172161528).

Almost surely, 2^{6774516484581} is an apocalyptic number.

It is an amenable number.

6774516484581 is a deficient number, since it is larger than the sum of its proper divisors (2258172161531).

6774516484581 is a wasteful number, since it uses less digits than its factorization.

6774516484581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258172161530.

The product of its digits is 180633600, while the sum is 66.

The spelling of 6774516484581 in words is "six trillion, seven hundred seventy-four billion, five hundred sixteen million, four hundred eighty-four thousand, five hundred eighty-one".