4121687761 has 8 divisors (see below), whose sum is σ = 4130511840. Its totient is φ = 4112875008.

The previous prime is 4121687707. The next prime is 4121687771. The reversal of 4121687761 is 1677861214.

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 4121687761 - 2⁹ = 4121687249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4121687771) 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, 1190545 + ... + 1194001.

It is an arithmetic number, because the mean of its divisors is an integer number (516313980).

Almost surely, 2^4121687761 is an apocalyptic number.

It is an amenable number.

4121687761 is a deficient number, since it is larger than the sum of its proper divisors (8824079).

4121687761 is a wasteful number, since it uses less digits than its factorization.

4121687761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663.

The product of its digits is 112896, while the sum is 43.

The square root of 4121687761 is about 64200.3719693274. The cubic root of 4121687761 is about 1603.3377926675.

The spelling of 4121687761 in words is "four billion, one hundred twenty-one million, six hundred eighty-seven thousand, seven hundred sixty-one".