51025124112 has 80 divisors (see below), whose sum is σ = 139205256960. Its totient is φ = 16060622976.

The previous prime is 51025124063. The next prime is 51025124201. The reversal of 51025124112 is 21142152015.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 15 ways as a sum of consecutive naturals, for example, 188863 + ... + 371105.

It is an arithmetic number, because the mean of its divisors is an integer number (1740065712).

Almost surely, 2^51025124112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51025124112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69602628480).

51025124112 is an abundant number, since it is smaller than the sum of its proper divisors (88180132848).

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

51025124112 is a wasteful number, since it uses less digits than its factorization.

51025124112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182580 (or 182574 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 51025124112 its reverse (21142152015), we get a palindrome (72167276127).

The spelling of 51025124112 in words is "fifty-one billion, twenty-five million, one hundred twenty-four thousand, one hundred twelve".