622537347281 has 2 divisors, whose sum is σ = 622537347282. Its totient is φ = 622537347280.

The previous prime is 622537347253. The next prime is 622537347319. The reversal of 622537347281 is 182743735226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599346930625 + 23190416656 = 774175^2 + 152284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622537347281 is a prime.

It is a super-2 number, since 2×622537347281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (622537347781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311268673640 + 311268673641.

It is an arithmetic number, because the mean of its divisors is an integer number (311268673641).

Almost surely, 2^622537347281 is an apocalyptic number.

It is an amenable number.

622537347281 is a deficient number, since it is larger than the sum of its proper divisors (1).

622537347281 is an equidigital number, since it uses as much as digits as its factorization.

622537347281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 50.

The spelling of 622537347281 in words is "six hundred twenty-two billion, five hundred thirty-seven million, three hundred forty-seven thousand, two hundred eighty-one".