51443204202 has 36 divisors (see below), whose sum is σ = 120693678534. Its totient is φ = 15828677280.

The previous prime is 51443204191. The next prime is 51443204221. The reversal of 51443204202 is 20240234415.

It can be written as a sum of positive squares in 3 ways, for example, as 26149800681 + 25293403521 = 161709^2 + 159039^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8452449 + ... + 8458532.

Almost surely, 2^51443204202 is an apocalyptic number.

51443204202 is an abundant number, since it is smaller than the sum of its proper divisors (69250474332).

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

51443204202 is a wasteful number, since it uses less digits than its factorization.

51443204202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16911015 (or 16910999 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 51443204202 its reverse (20240234415), we get a palindrome (71683438617).

The spelling of 51443204202 in words is "fifty-one billion, four hundred forty-three million, two hundred four thousand, two hundred two".