2661823005 has 64 divisors (see below), whose sum is σ = 4514918400. Its totient is φ = 1336490496.

The previous prime is 2661823001. The next prime is 2661823049. The reversal of 2661823005 is 5003281662.

It is not a de Polignac number, because 2661823005 - 2² = 2661823001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661823001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9405594 + ... + 9405876.

It is an arithmetic number, because the mean of its divisors is an integer number (70545600).

Almost surely, 2^2661823005 is an apocalyptic number.

It is an amenable number.

2661823005 is a deficient number, since it is larger than the sum of its proper divisors (1853095395).

2661823005 is a wasteful number, since it uses less digits than its factorization.

2661823005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2661823005 is about 51592.8580813275. The cubic root of 2661823005 is about 1385.8824379878.

The spelling of 2661823005 in words is "two billion, six hundred sixty-one million, eight hundred twenty-three thousand, five".