20606445612 has 36 divisors (see below), whose sum is σ = 53768792896. Its totient is φ = 6647240160.

The previous prime is 20606445589. The next prime is 20606445667. The reversal of 20606445612 is 21654460602.

20606445612 is a `hidden beast` number, since 2 + 0 + 6 + 0 + 644 + 5 + 6 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9231163 + ... + 9233394.

Almost surely, 2^20606445612 is an apocalyptic number.

It is an amenable number.

20606445612 is an abundant number, since it is smaller than the sum of its proper divisors (33162347284).

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

20606445612 is a wasteful number, since it uses less digits than its factorization.

20606445612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18464598 (or 18464593 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 20606445612 in words is "twenty billion, six hundred six million, four hundred forty-five thousand, six hundred twelve".