51043211402 has 16 divisors (see below), whose sum is σ = 80289989640. Its totient is φ = 24303992832.

The previous prime is 51043211389. The next prime is 51043211407. The reversal of 51043211402 is 20411234015.

It can be written as a sum of positive squares in 4 ways, for example, as 32320488841 + 18722722561 = 179779^2 + 136831^2 .

It is not an unprimeable number, because it can be changed into a prime (51043211407) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6023543 + ... + 6032010.

Almost surely, 2^51043211402 is an apocalyptic number.

51043211402 is a deficient number, since it is larger than the sum of its proper divisors (29246778238).

51043211402 is a wasteful number, since it uses less digits than its factorization.

51043211402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12055657.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 51043211402 its reverse (20411234015), we get a palindrome (71454445417).

The spelling of 51043211402 in words is "fifty-one billion, forty-three million, two hundred eleven thousand, four hundred two".