20442661312 has 14 divisors (see below), whose sum is σ = 40565906168. Its totient is φ = 10221330624.

The previous prime is 20442661307. The next prime is 20442661333. The reversal of 20442661312 is 21316624402.

It is a super-2 number, since 2×20442661312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159708228 + ... + 159708355.

Almost surely, 2^20442661312 is an apocalyptic number.

It is an amenable number.

20442661312 is a deficient number, since it is larger than the sum of its proper divisors (20123244856).

20442661312 is an equidigital number, since it uses as much as digits as its factorization.

20442661312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319416595 (or 319416585 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 20442661312 in words is "twenty billion, four hundred forty-two million, six hundred sixty-one thousand, three hundred twelve".