2664199840185 has 64 divisors (see below), whose sum is σ = 5158001721600. Its totient is φ = 1296868852224.

The previous prime is 2664199840171. The next prime is 2664199840207. The reversal of 2664199840185 is 5810489914662.

2664199840185 is a `hidden beast` number, since 2 + 6 + 64 + 1 + 9 + 98 + 401 + 85 = 666.

It is not a de Polignac number, because 2664199840185 - 2⁶ = 2664199840121 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8372247 + ... + 8684636.

It is an arithmetic number, because the mean of its divisors is an integer number (80593776900).

Almost surely, 2^{2664199840185} is an apocalyptic number.

It is an amenable number.

2664199840185 is a deficient number, since it is larger than the sum of its proper divisors (2493801881415).

2664199840185 is a wasteful number, since it uses less digits than its factorization.

2664199840185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17056999 (or 17056993 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

It can be divided in two parts, 2664199 and 840185, that added together give a square (3504384 = 1872²).

The spelling of 2664199840185 in words is "two trillion, six hundred sixty-four billion, one hundred ninety-nine million, eight hundred forty thousand, one hundred eighty-five".