20445270212 has 6 divisors (see below), whose sum is σ = 35779222878. Its totient is φ = 10222635104.

The previous prime is 20445270211. The next prime is 20445270217. The reversal of 20445270212 is 21207254402.

It can be written as a sum of positive squares in only one way, i.e., 13732089856 + 6713180356 = 117184^2 + 81934^2 .

It is not an unprimeable number, because it can be changed into a prime (20445270211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555658773 + ... + 2555658780.

It is an arithmetic number, because the mean of its divisors is an integer number (5963203813).

Almost surely, 2^20445270212 is an apocalyptic number.

It is an amenable number.

20445270212 is a deficient number, since it is larger than the sum of its proper divisors (15333952666).

20445270212 is a wasteful number, since it uses less digits than its factorization.

20445270212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111317557 (or 5111317555 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 29.

The spelling of 20445270212 in words is "twenty billion, four hundred forty-five million, two hundred seventy thousand, two hundred twelve".