51021350253130 has 16 divisors (see below), whose sum is σ = 91988248460904. Its totient is φ = 20375247211200.

The previous prime is 51021350253127. The next prime is 51021350253173. The reversal of 51021350253130 is 3135205312015.

It can be written as a sum of positive squares in 4 ways, for example, as 28981113994921 + 22040236258209 = 5383411^2 + 4694703^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51021350253092 and 51021350253101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4161604821 + ... + 4161617080.

Almost surely, 2^{51021350253130} is an apocalyptic number.

51021350253130 is a deficient number, since it is larger than the sum of its proper divisors (40966898207774).

51021350253130 is a wasteful number, since it uses less digits than its factorization.

51021350253130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8323222521.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 51021350253130 its reverse (3135205312015), we get a palindrome (54156555565145).

The spelling of 51021350253130 in words is "fifty-one trillion, twenty-one billion, three hundred fifty million, two hundred fifty-three thousand, one hundred thirty".