4051179661 has 4 divisors (see below), whose sum is σ = 4051527292. Its totient is φ = 4050832032.

The previous prime is 4051179637. The next prime is 4051179703. The reversal of 4051179661 is 1669711504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119137225 + 3932042436 = 10915^2 + 62706^2 .

It is a cyclic number.

It is not a de Polignac number, because 4051179661 - 2²⁷ = 3916961933 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 (4051179631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155706 + ... + 179851.

It is an arithmetic number, because the mean of its divisors is an integer number (1012881823).

Almost surely, 2^4051179661 is an apocalyptic number.

It is an amenable number.

4051179661 is a deficient number, since it is larger than the sum of its proper divisors (347631).

4051179661 is a wasteful number, since it uses less digits than its factorization.

4051179661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347630.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 4051179661 is about 63648.8779241237. The cubic root of 4051179661 is about 1594.1426013268.

The spelling of 4051179661 in words is "four billion, fifty-one million, one hundred seventy-nine thousand, six hundred sixty-one".