127671105561 has 8 divisors (see below), whose sum is σ = 180241560864. Its totient is φ = 80107360320.

The previous prime is 127671105533. The next prime is 127671105647. The reversal of 127671105561 is 165501176721.

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

It is not a de Polignac number, because 127671105561 - 2¹¹ = 127671103513 is a prime.

It is a super-2 number, since 2×127671105561² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (127671105521) 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, 1251677455 + ... + 1251677556.

It is an arithmetic number, because the mean of its divisors is an integer number (22530195108).

Almost surely, 2^127671105561 is an apocalyptic number.

It is an amenable number.

127671105561 is a deficient number, since it is larger than the sum of its proper divisors (52570455303).

127671105561 is a wasteful number, since it uses less digits than its factorization.

127671105561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503355031.

The product of its (nonzero) digits is 88200, while the sum is 42.

The spelling of 127671105561 in words is "one hundred twenty-seven billion, six hundred seventy-one million, one hundred five thousand, five hundred sixty-one".