127646199665 has 8 divisors (see below), whose sum is σ = 161237304960. Its totient is φ = 96742382832.

The previous prime is 127646199647. The next prime is 127646199803. The reversal of 127646199665 is 566991646721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127646199665 - 2⁸ = 127646199409 is a prime.

It is a super-2 number, since 2×127646199665² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127646199598 and 127646199607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671822009 + ... + 671822198.

It is an arithmetic number, because the mean of its divisors is an integer number (20154663120).

Almost surely, 2^127646199665 is an apocalyptic number.

It is an amenable number.

127646199665 is a deficient number, since it is larger than the sum of its proper divisors (33591105295).

127646199665 is a wasteful number, since it uses less digits than its factorization.

127646199665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343644231.

The product of its digits is 29393280, while the sum is 62.

The spelling of 127646199665 in words is "one hundred twenty-seven billion, six hundred forty-six million, one hundred ninety-nine thousand, six hundred sixty-five".