6691415412768 has 24 divisors (see below), whose sum is σ = 17564965458768. Its totient is φ = 2230471804224.

The previous prime is 6691415412739. The next prime is 6691415412779. The reversal of 6691415412768 is 8672145141966.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34851121846 + ... + 34851122037.

It is an arithmetic number, because the mean of its divisors is an integer number (731873560782).

Almost surely, 2^{6691415412768} is an apocalyptic number.

It is an amenable number.

6691415412768 is an abundant number, since it is smaller than the sum of its proper divisors (10873550046000).

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

6691415412768 is a wasteful number, since it uses less digits than its factorization.

6691415412768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69702243896 (or 69702243888 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The spelling of 6691415412768 in words is "six trillion, six hundred ninety-one billion, four hundred fifteen million, four hundred twelve thousand, seven hundred sixty-eight".