51343000000 has 98 divisors (see below), whose sum is σ = 127355557328. Its totient is φ = 20536800000.

The previous prime is 51342999989. The next prime is 51343000117. The reversal of 51343000000 is 34315.

It is a super-2 number, since 2×51343000000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 974329 + ... + 1025671.

Almost surely, 2^51343000000 is an apocalyptic number.

51343000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51343000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63677778664).

51343000000 is an abundant number, since it is smaller than the sum of its proper divisors (76012557328).

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

51343000000 is an frugal number, since it uses more digits than its factorization.

51343000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51385 (or 51350 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

Adding to 51343000000 its reverse (34315), we get a palindrome (51343034315).

The spelling of 51343000000 in words is "fifty-one billion, three hundred forty-three million", and thus it is an aban number.