20466604064 has 24 divisors (see below), whose sum is σ = 40366002348. Its totient is φ = 10214920960.

The previous prime is 20466604051. The next prime is 20466604069. The reversal of 20466604064 is 46040666402.

It can be written as a sum of positive squares in 2 ways, for example, as 16510194064 + 3956410000 = 128492^2 + 62900^2 .

It is not an unprimeable number, because it can be changed into a prime (20466604069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556307 + ... + 591954.

Almost surely, 2^20466604064 is an apocalyptic number.

It is an amenable number.

20466604064 is a deficient number, since it is larger than the sum of its proper divisors (19899398284).

20466604064 is a wasteful number, since it uses less digits than its factorization.

20466604064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148828 (or 1148820 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 20466604064 in words is "twenty billion, four hundred sixty-six million, six hundred four thousand, sixty-four".