6694391471040 has 336 divisors, whose sum is σ = 28339591670208. Its totient is φ = 1412442980352.

The previous prime is 6694391471021. The next prime is 6694391471099. The reversal of 6694391471040 is 401741934966.

6694391471040 is a `hidden beast` number, since 6 + 6 + 9 + 43 + 91 + 471 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12509577 + ... + 13033736.

It is an arithmetic number, because the mean of its divisors is an integer number (84344022828).

Almost surely, 2^{6694391471040} is an apocalyptic number.

6694391471040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6694391471040 is an abundant number, since it is smaller than the sum of its proper divisors (21645200199168).

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

6694391471040 is a wasteful number, since it uses less digits than its factorization.

6694391471040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25543356 (or 25543343 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 6694391471040 in words is "six trillion, six hundred ninety-four billion, three hundred ninety-one million, four hundred seventy-one thousand, forty".