51630245211 has 32 divisors (see below), whose sum is σ = 73083783168. Its totient is φ = 32369541120.

The previous prime is 51630245203. The next prime is 51630245231. The reversal of 51630245211 is 11254203615.

It is not a de Polignac number, because 51630245211 - 2³ = 51630245203 is a prime.

It is a super-3 number, since 3×51630245211³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51630245231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 755035 + ... + 820571.

It is an arithmetic number, because the mean of its divisors is an integer number (2283868224).

Almost surely, 2^51630245211 is an apocalyptic number.

51630245211 is a deficient number, since it is larger than the sum of its proper divisors (21453537957).

51630245211 is a wasteful number, since it uses less digits than its factorization.

51630245211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65811.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 51630245211 its reverse (11254203615), we get a palindrome (62884448826).

The spelling of 51630245211 in words is "fifty-one billion, six hundred thirty million, two hundred forty-five thousand, two hundred eleven".