691983964341 has 12 divisors (see below), whose sum is σ = 999566145760. Its totient is φ = 461307064680.

The previous prime is 691983964327. The next prime is 691983964379. The reversal of 691983964341 is 143469389196.

691983964341 is a `hidden beast` number, since 6 + 9 + 198 + 3 + 9 + 6 + 434 + 1 = 666.

691983964341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 691983964341 - 2⁶ = 691983964277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691983964541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1013575 + ... + 1552836.

Almost surely, 2^691983964341 is an apocalyptic number.

It is an amenable number.

691983964341 is a deficient number, since it is larger than the sum of its proper divisors (307582181419).

691983964341 is a wasteful number, since it uses less digits than its factorization.

691983964341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596376 (or 2596373 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 63.

The spelling of 691983964341 in words is "six hundred ninety-one billion, nine hundred eighty-three million, nine hundred sixty-four thousand, three hundred forty-one".