51330211320042 has 96 divisors (see below), whose sum is σ = 116227248583680. Its totient is φ = 16351260307200.

The previous prime is 51330211320029. The next prime is 51330211320127. The reversal of 51330211320042 is 24002311203315.

51330211320042 is a `hidden beast` number, since 5 + 1 + 3 + 302 + 113 + 200 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 51330211319988 and 51330211320015.

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, 104652798 + ... + 105142134.

It is an arithmetic number, because the mean of its divisors is an integer number (1210700506080).

Almost surely, 2^{51330211320042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51330211320042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58113624291840).

51330211320042 is an abundant number, since it is smaller than the sum of its proper divisors (64897037263638).

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

51330211320042 is a wasteful number, since it uses less digits than its factorization.

51330211320042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491428 (or 491425 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 51330211320042 its reverse (24002311203315), we get a palindrome (75332522523357).

The spelling of 51330211320042 in words is "fifty-one trillion, three hundred thirty billion, two hundred eleven million, three hundred twenty thousand, forty-two".