21462050144477 has 2 divisors, whose sum is σ = 21462050144478. Its totient is φ = 21462050144476.

The previous prime is 21462050144443. The next prime is 21462050144573. The reversal of 21462050144477 is 77444105026412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12823747212676 + 8638302931801 = 3581026^2 + 2939099^2 .

It is a cyclic number.

It is not a de Polignac number, because 21462050144477 - 2⁸ = 21462050144221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21462050344477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10731025072238 + 10731025072239.

It is an arithmetic number, because the mean of its divisors is an integer number (10731025072239).

Almost surely, 2^{21462050144477} is an apocalyptic number.

It is an amenable number.

21462050144477 is a deficient number, since it is larger than the sum of its proper divisors (1).

21462050144477 is an equidigital number, since it uses as much as digits as its factorization.

21462050144477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 47.

The spelling of 21462050144477 in words is "twenty-one trillion, four hundred sixty-two billion, fifty million, one hundred forty-four thousand, four hundred seventy-seven".