51242213322403 has 16 divisors (see below), whose sum is σ = 51996432993120. Its totient is φ = 50493166442496.

The previous prime is 51242213322401. The next prime is 51242213322451. The reversal of 51242213322403 is 30422331224215.

It is a cyclic number.

It is not a de Polignac number, because 51242213322403 - 2¹ = 51242213322401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51242213322401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149279853 + ... + 149622721.

It is an arithmetic number, because the mean of its divisors is an integer number (3249777062070).

Almost surely, 2^{51242213322403} is an apocalyptic number.

51242213322403 is a deficient number, since it is larger than the sum of its proper divisors (754219670717).

51242213322403 is a wasteful number, since it uses less digits than its factorization.

51242213322403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350406.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 51242213322403 its reverse (30422331224215), we get a palindrome (81664544546618).

The spelling of 51242213322403 in words is "fifty-one trillion, two hundred forty-two billion, two hundred thirteen million, three hundred twenty-two thousand, four hundred three".