20411550123450 has 48 divisors (see below), whose sum is σ = 51988769842080. Its totient is φ = 5295969760320.

The previous prime is 20411550123427. The next prime is 20411550123457. The reversal of 20411550123450 is 5432105511402.

It is a super-2 number, since 2×20411550123450² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20411550123457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1838872840 + ... + 1838883939.

It is an arithmetic number, because the mean of its divisors is an integer number (1083099371710).

Almost surely, 2^{20411550123450} is an apocalyptic number.

20411550123450 is an abundant number, since it is smaller than the sum of its proper divisors (31577219718630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20411550123450 is a wasteful number, since it uses less digits than its factorization.

20411550123450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3677756831 (or 3677756826 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 20411550123450 its reverse (5432105511402), we get a palindrome (25843655634852).

The spelling of 20411550123450 in words is "twenty trillion, four hundred eleven billion, five hundred fifty million, one hundred twenty-three thousand, four hundred fifty".