20010400050 has 96 divisors (see below), whose sum is σ = 52280582400. Its totient is φ = 5051108160.

The previous prime is 20010400049. The next prime is 20010400127. The reversal of 20010400050 is 5000401002.

It is a super-2 number, since 2×20010400050² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010399999 and 20010400035.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4976941 + ... + 4980959.

It is an arithmetic number, because the mean of its divisors is an integer number (544589400).

Almost surely, 2^20010400050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010400050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26140291200).

20010400050 is an abundant number, since it is smaller than the sum of its proper divisors (32270182350).

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

20010400050 is a wasteful number, since it uses less digits than its factorization.

20010400050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5800 (or 5795 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

Adding to 20010400050 its reverse (5000401002), we get a palindrome (25010801052).

The spelling of 20010400050 in words is "twenty billion, ten million, four hundred thousand, fifty".