20542212050452 has 12 divisors (see below), whose sum is σ = 35981761188436. Its totient is φ = 10261708853760.

The previous prime is 20542212050449. The next prime is 20542212050557. The reversal of 20542212050452 is 25405021224502.

It can be written as a sum of positive squares in 2 ways, for example, as 15171850751236 + 5370361299216 = 3895106^2 + 2317404^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2349287949 + ... + 2349296692.

Almost surely, 2^{20542212050452} is an apocalyptic number.

It is an amenable number.

20542212050452 is a deficient number, since it is larger than the sum of its proper divisors (15439549137984).

20542212050452 is a wasteful number, since it uses less digits than its factorization.

20542212050452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698585738 (or 4698585736 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 20542212050452 its reverse (25405021224502), we get a palindrome (45947233274954).

The spelling of 20542212050452 in words is "twenty trillion, five hundred forty-two billion, two hundred twelve million, fifty thousand, four hundred fifty-two".