51730140126 has 128 divisors (see below), whose sum is σ = 125827153920. Its totient is φ = 13849460352.

The previous prime is 51730140103. The next prime is 51730140127. The reversal of 51730140126 is 62104103715.

It is a junction number, because it is equal to n+sod(n) for n = 51730140093 and 51730140102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51730140127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47328036 + ... + 47329128.

It is an arithmetic number, because the mean of its divisors is an integer number (983024640).

Almost surely, 2^51730140126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51730140126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62913576960).

51730140126 is an abundant number, since it is smaller than the sum of its proper divisors (74097013794).

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

51730140126 is a wasteful number, since it uses less digits than its factorization.

51730140126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718.

The product of its (nonzero) digits is 5040, while the sum is 30.

The spelling of 51730140126 in words is "fifty-one billion, seven hundred thirty million, one hundred forty thousand, one hundred twenty-six".