127991164709 has 8 divisors (see below), whose sum is σ = 128514355200. Its totient is φ = 127468080000.

The previous prime is 127991164699. The next prime is 127991164733. The reversal of 127991164709 is 907461199721.

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 127991164709 - 2²⁴ = 127974387493 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 (127991164739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3192629 + ... + 3232469.

It is an arithmetic number, because the mean of its divisors is an integer number (16064294400).

Almost surely, 2^127991164709 is an apocalyptic number.

It is an amenable number.

127991164709 is a deficient number, since it is larger than the sum of its proper divisors (523190491).

127991164709 is a wasteful number, since it uses less digits than its factorization.

127991164709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52891.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The spelling of 127991164709 in words is "one hundred twenty-seven billion, nine hundred ninety-one million, one hundred sixty-four thousand, seven hundred nine".