6944594489991 has 32 divisors (see below), whose sum is σ = 10379827224000. Its totient is φ = 4588540959744.

The previous prime is 6944594489969. The next prime is 6944594490011. The reversal of 6944594489991 is 1999844954496.

6944594489991 is a `hidden beast` number, since 6 + 9 + 4 + 45 + 9 + 4 + 489 + 9 + 91 = 666.

It is not a de Polignac number, because 6944594489991 - 2⁷ = 6944594489863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6944594489991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6944594489291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87612565 + ... + 87691793.

It is an arithmetic number, because the mean of its divisors is an integer number (324369600750).

Almost surely, 2^{6944594489991} is an apocalyptic number.

6944594489991 is a deficient number, since it is larger than the sum of its proper divisors (3435232734009).

6944594489991 is a wasteful number, since it uses less digits than its factorization.

6944594489991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108080 (or 108074 counting only the distinct ones).

The product of its digits is 3627970560, while the sum is 81.

The spelling of 6944594489991 in words is "six trillion, nine hundred forty-four billion, five hundred ninety-four million, four hundred eighty-nine thousand, nine hundred ninety-one".