2075127105661 has 8 divisors (see below), whose sum is σ = 2206623424824. Its totient is φ = 1944678566400.

The previous prime is 2075127105599. The next prime is 2075127105673. The reversal of 2075127105661 is 1665017215702.

It can be written as a sum of positive squares in 4 ways, for example, as 361554474436 + 1713572631225 = 601294^2 + 1309035^2 .

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 2075127105661 - 2²⁹ = 2074590234749 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 (2075127145661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261940890 + ... + 261948811.

It is an arithmetic number, because the mean of its divisors is an integer number (275827928103).

Almost surely, 2^{2075127105661} is an apocalyptic number.

It is an amenable number.

2075127105661 is a deficient number, since it is larger than the sum of its proper divisors (131496319163).

2075127105661 is a wasteful number, since it uses less digits than its factorization.

2075127105661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523889951.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 2075127105661 in words is "two trillion, seventy-five billion, one hundred twenty-seven million, one hundred five thousand, six hundred sixty-one".