20446446466 has 4 divisors (see below), whose sum is σ = 30669669702. Its totient is φ = 10223223232.

The previous prime is 20446446439. The next prime is 20446446487. The reversal of 20446446466 is 66464464402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10884540241 + 9561906225 = 104329^2 + 97785^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111611615 + ... + 5111611618.

Almost surely, 2^20446446466 is an apocalyptic number.

20446446466 is a deficient number, since it is larger than the sum of its proper divisors (10223223236).

20446446466 is a wasteful number, since it uses less digits than its factorization.

20446446466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10223223235.

The product of its (nonzero) digits is 2654208, while the sum is 46.

The spelling of 20446446466 in words is "twenty billion, four hundred forty-six million, four hundred forty-six thousand, four hundred sixty-six".