51110505235640 has 16 divisors (see below), whose sum is σ = 114998636780280. Its totient is φ = 20444202094240.

The previous prime is 51110505235639. The next prime is 51110505235651. The reversal of 51110505235640 is 4653250501115.

It is a super-2 number, since 2×51110505235640² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51110505235594 and 51110505235603.

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, 638881315406 + ... + 638881315485.

Almost surely, 2^{51110505235640} is an apocalyptic number.

It is an amenable number.

51110505235640 is an abundant number, since it is smaller than the sum of its proper divisors (63888131544640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51110505235640 is a wasteful number, since it uses less digits than its factorization.

51110505235640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277762630902 (or 1277762630898 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

Adding to 51110505235640 its reverse (4653250501115), we get a palindrome (55763755736755).

The spelling of 51110505235640 in words is "fifty-one trillion, one hundred ten billion, five hundred five million, two hundred thirty-five thousand, six hundred forty".