20601460566 has 32 divisors (see below), whose sum is σ = 45834422400. Its totient is φ = 6859143720.

The previous prime is 20601460549. The next prime is 20601460601. The reversal of 20601460566 is 66506410602.

It is a happy number.

20601460566 is a `hidden beast` number, since 2 + 0 + 601 + 46 + 0 + 5 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20601460566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175680 + ... + 268451.

It is an arithmetic number, because the mean of its divisors is an integer number (1432325700).

Almost surely, 2^20601460566 is an apocalyptic number.

20601460566 is an abundant number, since it is smaller than the sum of its proper divisors (25232961834).

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

20601460566 is a wasteful number, since it uses less digits than its factorization.

20601460566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445001 (or 444995 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 20601460566 in words is "twenty billion, six hundred one million, four hundred sixty thousand, five hundred sixty-six".