16442732420461 has 2 divisors, whose sum is σ = 16442732420462. Its totient is φ = 16442732420460.

The previous prime is 16442732420369. The next prime is 16442732420479. The reversal of 16442732420461 is 16402423724461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14997882744100 + 1444849676361 = 3872710^2 + 1202019^2 .

It is an emirp because it is prime and its reverse (16402423724461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16442732420461 - 2²¹ = 16442730323309 is a prime.

It is a super-3 number, since 3×16442732420461³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16442732490461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221366210230 + 8221366210231.

It is an arithmetic number, because the mean of its divisors is an integer number (8221366210231).

Almost surely, 2^{16442732420461} is an apocalyptic number.

It is an amenable number.

16442732420461 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442732420461 is an equidigital number, since it uses as much as digits as its factorization.

16442732420461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 46.

The spelling of 16442732420461 in words is "sixteen trillion, four hundred forty-two billion, seven hundred thirty-two million, four hundred twenty thousand, four hundred sixty-one".