51210240030 has 96 divisors (see below), whose sum is σ = 135490773600. Its totient is φ = 13415940096.

The previous prime is 51210240023. The next prime is 51210240041. The reversal of 51210240030 is 3004201215.

51210240030 is a `hidden beast` number, since 51 + 210 + 2 + 400 + 3 + 0 = 666.

51210240030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 51210239985 and 51210240012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15381406 + ... + 15384734.

It is an arithmetic number, because the mean of its divisors is an integer number (1411362225).

Almost surely, 2^51210240030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51210240030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67745386800).

51210240030 is an abundant number, since it is smaller than the sum of its proper divisors (84280533570).

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

51210240030 is a wasteful number, since it uses less digits than its factorization.

51210240030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6298 (or 6295 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 51210240030 its reverse (3004201215), we get a palindrome (54214441245).

The spelling of 51210240030 in words is "fifty-one billion, two hundred ten million, two hundred forty thousand, thirty".