20450111051252 has 12 divisors (see below), whose sum is σ = 36660564933636. Its totient is φ = 9975663927360.

The previous prime is 20450111051207. The next prime is 20450111051257. The reversal of 20450111051252 is 25215011105402.

It can be written as a sum of positive squares in 2 ways, for example, as 6874747656676 + 13575363394576 = 2621974^2 + 3684476^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450111051257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62347899383 + ... + 62347899710.

It is an arithmetic number, because the mean of its divisors is an integer number (3055047077803).

Almost surely, 2^{20450111051252} is an apocalyptic number.

It is an amenable number.

20450111051252 is a deficient number, since it is larger than the sum of its proper divisors (16210453882384).

20450111051252 is a wasteful number, since it uses less digits than its factorization.

20450111051252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124695799138 (or 124695799136 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 20450111051252 its reverse (25215011105402), we get a palindrome (45665122156654).

The spelling of 20450111051252 in words is "twenty trillion, four hundred fifty billion, one hundred eleven million, fifty-one thousand, two hundred fifty-two".