6421966522941 has 16 divisors (see below), whose sum is σ = 8614246032000. Its totient is φ = 4255576413888.

The previous prime is 6421966522913. The next prime is 6421966522957. The reversal of 6421966522941 is 1492256691246.

It is not a de Polignac number, because 6421966522941 - 2⁷ = 6421966522813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421966522141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9342681 + ... + 10006478.

It is an arithmetic number, because the mean of its divisors is an integer number (538390377000).

Almost surely, 2^{6421966522941} is an apocalyptic number.

It is an amenable number.

6421966522941 is a deficient number, since it is larger than the sum of its proper divisors (2192279509059).

6421966522941 is a wasteful number, since it uses less digits than its factorization.

6421966522941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19349828.

The product of its digits is 11197440, while the sum is 57.

The spelling of 6421966522941 in words is "six trillion, four hundred twenty-one billion, nine hundred sixty-six million, five hundred twenty-two thousand, nine hundred forty-one".