2660012775 has 54 divisors (see below), whose sum is σ = 5542259112. Its totient is φ = 1216000800.

The previous prime is 2660012717. The next prime is 2660012777. The reversal of 2660012775 is 5772100662.

2660012775 is a `hidden beast` number, since 26 + 600 + 1 + 27 + 7 + 5 = 666.

It is not a de Polignac number, because 2660012775 - 2⁸ = 2660012519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660012777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 109611 + ... + 131660.

It is an arithmetic number, because the mean of its divisors is an integer number (102634428).

Almost surely, 2^2660012775 is an apocalyptic number.

2660012775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2660012775 is an abundant number, since it is smaller than the sum of its proper divisors (2882246337).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2660012775 is a wasteful number, since it uses less digits than its factorization.

2660012775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241301 (or 241286 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 2660012775 is about 51575.3116810747. The cubic root of 2660012775 is about 1385.5682003533.

The spelling of 2660012775 in words is "two billion, six hundred sixty million, twelve thousand, seven hundred seventy-five".