51362261222442 has 16 divisors (see below), whose sum is σ = 102744755817312. Its totient is φ = 17117381512080.

The previous prime is 51362261222351. The next prime is 51362261222449. The reversal of 51362261222442 is 24422216226315.

It is a junction number, because it is equal to n+sod(n) for n = 51362261222394 and 51362261222403.

It is not an unprimeable number, because it can be changed into a prime (51362261222449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843024184 + ... + 843085107.

It is an arithmetic number, because the mean of its divisors is an integer number (6421547238582).

Almost surely, 2^{51362261222442} is an apocalyptic number.

51362261222442 is an abundant number, since it is smaller than the sum of its proper divisors (51382494594870).

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

51362261222442 is a wasteful number, since it uses less digits than its factorization.

51362261222442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686114373.

The product of its digits is 552960, while the sum is 42.

Adding to 51362261222442 its reverse (24422216226315), we get a palindrome (75784477448757).

The spelling of 51362261222442 in words is "fifty-one trillion, three hundred sixty-two billion, two hundred sixty-one million, two hundred twenty-two thousand, four hundred forty-two".