20660564232 has 144 divisors (see below), whose sum is σ = 71008844400. Its totient is φ = 5366370240.

The previous prime is 20660564227. The next prime is 20660564293. The reversal of 20660564232 is 23246506602.

20660564232 is a `hidden beast` number, since 2 + 0 + 6 + 6 + 0 + 5 + 642 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 35 ways as a sum of consecutive naturals, for example, 227382 + ... + 304997.

It is an arithmetic number, because the mean of its divisors is an integer number (493116975).

Almost surely, 2^20660564232 is an apocalyptic number.

20660564232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20660564232 is an abundant number, since it is smaller than the sum of its proper divisors (50348280168).

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

20660564232 is a wasteful number, since it uses less digits than its factorization.

20660564232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532416 (or 532402 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 20660564232 in words is "twenty billion, six hundred sixty million, five hundred sixty-four thousand, two hundred thirty-two".