51250751040 has 112 divisors (see below), whose sum is σ = 162795094272. Its totient is φ = 13660655616.

The previous prime is 51250751039. The next prime is 51250751047. The reversal of 51250751040 is 4015705215.

It is a super-2 number, since 2×51250751040² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 51250750989 and 51250751007.

It is not an unprimeable number, because it can be changed into a prime (51250751047) by changing a digit.

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, 2338212 + ... + 2360028.

Almost surely, 2^51250751040 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 51250751040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81397547136).

51250751040 is an abundant number, since it is smaller than the sum of its proper divisors (111544343232).

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

51250751040 is a wasteful number, since it uses less digits than its factorization.

51250751040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24284 (or 24274 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 30.

The spelling of 51250751040 in words is "fifty-one billion, two hundred fifty million, seven hundred fifty-one thousand, forty".