2661082177 has 8 divisors (see below), whose sum is σ = 2874825576. Its totient is φ = 2448630912.

The previous prime is 2661082169. The next prime is 2661082243. The reversal of 2661082177 is 7712801662.

It can be written as a sum of positive squares in 4 ways, for example, as 439279681 + 2221802496 = 20959^2 + 47136^2 .

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

It is not a de Polignac number, because 2661082177 - 2³ = 2661082169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661082157) 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, 318748 + ... + 326989.

It is an arithmetic number, because the mean of its divisors is an integer number (359353197).

Almost surely, 2^2661082177 is an apocalyptic number.

It is an amenable number.

2661082177 is a deficient number, since it is larger than the sum of its proper divisors (213743399).

2661082177 is a wasteful number, since it uses less digits than its factorization.

2661082177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646067.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 2661082177 is about 51585.6780221022. The cubic root of 2661082177 is about 1385.7538549608.

The spelling of 2661082177 in words is "two billion, six hundred sixty-one million, eighty-two thousand, one hundred seventy-seven".