2660537745 has 24 divisors (see below), whose sum is σ = 4782400896. Its totient is φ = 1418952816.

The previous prime is 2660537743. The next prime is 2660537777. The reversal of 2660537745 is 5477350662.

2660537745 is a `hidden beast` number, since 2 + 6 + 605 + 37 + 7 + 4 + 5 = 666.

It is not a de Polignac number, because 2660537745 - 2¹ = 2660537743 is a prime.

It is a super-2 number, since 2×2660537745² = 14156922185139370050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2660537745.

It is not an unprimeable number, because it can be changed into a prime (2660537741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1093657 + ... + 1096086.

It is an arithmetic number, because the mean of its divisors is an integer number (199266704).

Almost surely, 2^2660537745 is an apocalyptic number.

It is an amenable number.

2660537745 is a deficient number, since it is larger than the sum of its proper divisors (2121863151).

2660537745 is an equidigital number, since it uses as much as digits as its factorization.

2660537745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189763 (or 2189751 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 45.

The square root of 2660537745 is about 51580.4007836310. The cubic root of 2660537745 is about 1385.6593445136.

The spelling of 2660537745 in words is "two billion, six hundred sixty million, five hundred thirty-seven thousand, seven hundred forty-five".