16420220235373 has 2 divisors, whose sum is σ = 16420220235374. Its totient is φ = 16420220235372.

The previous prime is 16420220235361. The next prime is 16420220235383. The reversal of 16420220235373 is 37353202202461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13748685558084 + 2671534677289 = 3707922^2 + 1634483^2 .

It is a cyclic number.

It is not a de Polignac number, because 16420220235373 - 2¹³ = 16420220227181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16420220235343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8210110117686 + 8210110117687.

It is an arithmetic number, because the mean of its divisors is an integer number (8210110117687).

Almost surely, 2^{16420220235373} is an apocalyptic number.

It is an amenable number.

16420220235373 is a deficient number, since it is larger than the sum of its proper divisors (1).

16420220235373 is an equidigital number, since it uses as much as digits as its factorization.

16420220235373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 40.

The spelling of 16420220235373 in words is "sixteen trillion, four hundred twenty billion, two hundred twenty million, two hundred thirty-five thousand, three hundred seventy-three".