4131761721 has 16 divisors (see below), whose sum is σ = 5591721600. Its totient is φ = 2713386368.

The previous prime is 4131761707. The next prime is 4131761731. The reversal of 4131761721 is 1271671314.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4131761721 - 2¹⁴ = 4131745337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4131761731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43060 + ... + 100586.

It is an arithmetic number, because the mean of its divisors is an integer number (349482600).

Almost surely, 2^4131761721 is an apocalyptic number.

It is an amenable number.

4131761721 is a deficient number, since it is larger than the sum of its proper divisors (1459959879).

4131761721 is a wasteful number, since it uses less digits than its factorization.

4131761721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57888.

The product of its digits is 7056, while the sum is 33.

The square root of 4131761721 is about 64278.7812656712. The cubic root of 4131761721 is about 1604.6429877216.

The spelling of 4131761721 in words is "four billion, one hundred thirty-one million, seven hundred sixty-one thousand, seven hundred twenty-one".