51361300140 has 192 divisors, whose sum is σ = 149918791680. Its totient is φ = 13129768960.

The previous prime is 51361300127. The next prime is 51361300183. The reversal of 51361300140 is 4100316315.

It is a super-3 number, since 3×51361300140³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51361300140.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28359835 + ... + 28361645.

It is an arithmetic number, because the mean of its divisors is an integer number (780827040).

Almost surely, 2^51361300140 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 51361300140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74959395840).

51361300140 is an abundant number, since it is smaller than the sum of its proper divisors (98557491540).

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

51361300140 is a wasteful number, since it uses less digits than its factorization.

51361300140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 51361300140 its reverse (4100316315), we get a palindrome (55461616455).

The spelling of 51361300140 in words is "fifty-one billion, three hundred sixty-one million, three hundred thousand, one hundred forty".