51204001426650 has 144 divisors (see below), whose sum is σ = 141768358916184. Its totient is φ = 13240018736640.

The previous prime is 51204001426601. The next prime is 51204001426651. The reversal of 51204001426650 is 5662410040215.

51204001426650 is a `hidden beast` number, since 5 + 1 + 2 + 0 + 400 + 142 + 66 + 50 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 15259671887769 + 35944329538881 = 3906363^2 + 5995359^2 .

It is not an unprimeable number, because it can be changed into a prime (51204001426651) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 369529 + ... + 10126428.

Almost surely, 2^{51204001426650} is an apocalyptic number.

51204001426650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51204001426650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70884179458092).

51204001426650 is an abundant number, since it is smaller than the sum of its proper divisors (90564357489534).

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

51204001426650 is a wasteful number, since it uses less digits than its factorization.

51204001426650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10496305 (or 10496297 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 51204001426650 its reverse (5662410040215), we get a palindrome (56866411466865).

The spelling of 51204001426650 in words is "fifty-one trillion, two hundred four billion, one million, four hundred twenty-six thousand, six hundred fifty".