51630556220163 has 40 divisors (see below), whose sum is σ = 80484171391008. Its totient is φ = 32922323064576.

The previous prime is 51630556220141. The next prime is 51630556220213. The reversal of 51630556220163 is 36102265503615.

51630556220163 is a `hidden beast` number, since 5 + 1 + 6 + 3 + 0 + 5 + 5 + 622 + 0 + 16 + 3 = 666.

It is not a de Polignac number, because 51630556220163 - 2⁶ = 51630556220099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51630556320163) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40721181 + ... + 41969937.

Almost surely, 2^{51630556220163} is an apocalyptic number.

51630556220163 is a deficient number, since it is larger than the sum of its proper divisors (28853615170845).

51630556220163 is a wasteful number, since it uses less digits than its factorization.

51630556220163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270985 (or 1270976 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 51630556220163 in words is "fifty-one trillion, six hundred thirty billion, five hundred fifty-six million, two hundred twenty thousand, one hundred sixty-three".