51097630228 has 6 divisors (see below), whose sum is σ = 89420852906. Its totient is φ = 25548815112.

The previous prime is 51097630193. The next prime is 51097630229. The reversal of 51097630228 is 82203679015.

It can be written as a sum of positive squares in only one way, i.e., 51052498704 + 45131524 = 225948^2 + 6718^2 .

It is a super-2 number, since 2×51097630228² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51097630229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6387203775 + ... + 6387203782.

Almost surely, 2^51097630228 is an apocalyptic number.

It is an amenable number.

51097630228 is a deficient number, since it is larger than the sum of its proper divisors (38323222678).

51097630228 is a wasteful number, since it uses less digits than its factorization.

51097630228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12774407561 (or 12774407559 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 51097630228 in words is "fifty-one billion, ninety-seven million, six hundred thirty thousand, two hundred twenty-eight".