51154101200 has 120 divisors (see below), whose sum is σ = 124321417920. Its totient is φ = 20225920000.

The previous prime is 51154101169. The next prime is 51154101221. The reversal of 51154101200 is 210145115.

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

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 13752941 + ... + 13756659.

It is an arithmetic number, because the mean of its divisors is an integer number (1036011816).

Almost surely, 2^51154101200 is an apocalyptic number.

51154101200 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 51154101200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62160708960).

51154101200 is an abundant number, since it is smaller than the sum of its proper divisors (73167316720).

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

51154101200 is a wasteful number, since it uses less digits than its factorization.

51154101200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4125 (or 4114 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

Adding to 51154101200 its reverse (210145115), we get a palindrome (51364246315).

The spelling of 51154101200 in words is "fifty-one billion, one hundred fifty-four million, one hundred one thousand, two hundred".