51135853116 has 24 divisors (see below), whose sum is σ = 119329318864. Its totient is φ = 17043523200.

The previous prime is 51135853099. The next prime is 51135853117. The reversal of 51135853116 is 61135853115.

It is a super-2 number, since 2×51135853116² (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 (51135853117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96385 + ... + 334008.

Almost surely, 2^51135853116 is an apocalyptic number.

It is an amenable number.

51135853116 is an abundant number, since it is smaller than the sum of its proper divisors (68193465748).

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

51135853116 is a wasteful number, since it uses less digits than its factorization.

51135853116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440301 (or 440299 counting only the distinct ones).

The product of its digits is 54000, while the sum is 39.

Subtracting 51135853116 from its reverse (61135853115), we obtain a palindrome (9999999999).

The spelling of 51135853116 in words is "fifty-one billion, one hundred thirty-five million, eight hundred fifty-three thousand, one hundred sixteen".