20450211133516 has 24 divisors (see below), whose sum is σ = 37677682500080. Its totient is φ = 9685337303232.

The previous prime is 20450211133489. The next prime is 20450211133579. The reversal of 20450211133516 is 61533111205402.

It is a super-2 number, since 2×20450211133516² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21827235 + ... + 22744858.

Almost surely, 2^{20450211133516} is an apocalyptic number.

It is an amenable number.

20450211133516 is a deficient number, since it is larger than the sum of its proper divisors (17227471366564).

20450211133516 is a wasteful number, since it uses less digits than its factorization.

20450211133516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44578153 (or 44578151 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 20450211133516 its reverse (61533111205402), we get a palindrome (81983322338918).

The spelling of 20450211133516 in words is "twenty trillion, four hundred fifty billion, two hundred eleven million, one hundred thirty-three thousand, five hundred sixteen".