20145524668 has 12 divisors (see below), whose sum is σ = 37110177160. Its totient is φ = 9542616912.

The previous prime is 20145524629. The next prime is 20145524677. The reversal of 20145524668 is 86642554102.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 132536271 + ... + 132536422.

Almost surely, 2^20145524668 is an apocalyptic number.

It is an amenable number.

20145524668 is a deficient number, since it is larger than the sum of its proper divisors (16964652492).

20145524668 is a wasteful number, since it uses less digits than its factorization.

20145524668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265072716 (or 265072714 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 20145524668 in words is "twenty billion, one hundred forty-five million, five hundred twenty-four thousand, six hundred sixty-eight".