20466449722 has 4 divisors (see below), whose sum is σ = 30699674586. Its totient is φ = 10233224860.

The previous prime is 20466449713. The next prime is 20466449777. The reversal of 20466449722 is 22794466402.

It is a happy number.

It is a Cunningham number, because it is equal to 143061²+1.

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., 20466449721 + 1 = 143061^2 + 1^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5116612429 + ... + 5116612432.

Almost surely, 2^20466449722 is an apocalyptic number.

20466449722 is a deficient number, since it is larger than the sum of its proper divisors (10233224864).

20466449722 is a wasteful number, since it uses less digits than its factorization.

20466449722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10233224863.

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 20466449722 in words is "twenty billion, four hundred sixty-six million, four hundred forty-nine thousand, seven hundred twenty-two".