2660166544 has 40 divisors (see below), whose sum is σ = 6080388608. Its totient is φ = 1103293440.

The previous prime is 2660166493. The next prime is 2660166557. The reversal of 2660166544 is 4456610662.

It is a junction number, because it is equal to n+sod(n) for n = 2660166497 and 2660166506.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 379617 + ... + 386560.

Almost surely, 2^2660166544 is an apocalyptic number.

It is an amenable number.

2660166544 is an abundant number, since it is smaller than the sum of its proper divisors (3420222064).

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

2660166544 is a wasteful number, since it uses less digits than its factorization.

2660166544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766223 (or 766217 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 2660166544 is about 51576.8023824665. The cubic root of 2660166544 is about 1385.5948986375.

The spelling of 2660166544 in words is "two billion, six hundred sixty million, one hundred sixty-six thousand, five hundred forty-four".