51342005000 has 160 divisors (see below), whose sum is σ = 141326760960. Its totient is φ = 17233440000.

The previous prime is 51342004969. The next prime is 51342005017. The reversal of 51342005000 is 50024315.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 679097 + ... + 750903.

It is an arithmetic number, because the mean of its divisors is an integer number (883292256).

Almost surely, 2^51342005000 is an apocalyptic number.

51342005000 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 51342005000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70663380480).

51342005000 is an abundant number, since it is smaller than the sum of its proper divisors (89984755960).

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

51342005000 is a wasteful number, since it uses less digits than its factorization.

51342005000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71857 (or 71838 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 51342005000 its reverse (50024315), we get a palindrome (51392029315).

The spelling of 51342005000 in words is "fifty-one billion, three hundred forty-two million, five thousand".