51630556853 has 2 divisors, whose sum is σ = 51630556854. Its totient is φ = 51630556852.

The previous prime is 51630556847. The next prime is 51630556897. The reversal of 51630556853 is 35865503615.

51630556853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50065405009 + 1565151844 = 223753^2 + 39562^2 .

It is a cyclic number.

It is not a de Polignac number, because 51630556853 - 2¹⁴ = 51630540469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51630556798 and 51630556807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51630556253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25815278426 + 25815278427.

It is an arithmetic number, because the mean of its divisors is an integer number (25815278427).

Almost surely, 2^51630556853 is an apocalyptic number.

It is an amenable number.

51630556853 is a deficient number, since it is larger than the sum of its proper divisors (1).

51630556853 is an equidigital number, since it uses as much as digits as its factorization.

51630556853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620000, while the sum is 47.

The spelling of 51630556853 in words is "fifty-one billion, six hundred thirty million, five hundred fifty-six thousand, eight hundred fifty-three".