51836958416 has 20 divisors (see below), whose sum is σ = 106341996132. Its totient is φ = 24393862656.

The previous prime is 51836958413. The next prime is 51836958421. The reversal of 51836958416 is 61485963815.

It can be written as a sum of positive squares in 2 ways, for example, as 46054876816 + 5782081600 = 214604^2 + 76040^2 .

It is a super-2 number, since 2×51836958416² (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 (51836958413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95288255 + ... + 95288798.

Almost surely, 2^51836958416 is an apocalyptic number.

It is an amenable number.

51836958416 is an abundant number, since it is smaller than the sum of its proper divisors (54505037716).

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

51836958416 is a wasteful number, since it uses less digits than its factorization.

51836958416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190577078 (or 190577072 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 56.

The spelling of 51836958416 in words is "fifty-one billion, eight hundred thirty-six million, nine hundred fifty-eight thousand, four hundred sixteen".