51213110525012 has 12 divisors (see below), whose sum is σ = 94894881267060. Its totient is φ = 24100287305856.

The previous prime is 51213110524999. The next prime is 51213110525047. The reversal of 51213110525012 is 21052501131215.

It can be written as a sum of positive squares in 2 ways, for example, as 14788916244496 + 36424194280516 = 3845636^2 + 6035246^2 .

It is a super-3 number, since 3×51213110525012³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376566989087 + ... + 376566989222.

It is an arithmetic number, because the mean of its divisors is an integer number (7907906772255).

Almost surely, 2^{51213110525012} is an apocalyptic number.

It is an amenable number.

51213110525012 is a deficient number, since it is larger than the sum of its proper divisors (43681770742048).

51213110525012 is a wasteful number, since it uses less digits than its factorization.

51213110525012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753133978330 (or 753133978328 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 51213110525012 its reverse (21052501131215), we get a palindrome (72265611656227).

The spelling of 51213110525012 in words is "fifty-one trillion, two hundred thirteen billion, one hundred ten million, five hundred twenty-five thousand, twelve".