21602422060757 has 2 divisors, whose sum is σ = 21602422060758. Its totient is φ = 21602422060756.

The previous prime is 21602422060691. The next prime is 21602422060783. The reversal of 21602422060757 is 75706022420612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17752326649201 + 3850095411556 = 4213351^2 + 1962166^2 .

It is a cyclic number.

It is not a de Polignac number, because 21602422060757 - 2²⁴ = 21602405283541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21602422960757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10801211030378 + 10801211030379.

It is an arithmetic number, because the mean of its divisors is an integer number (10801211030379).

Almost surely, 2^{21602422060757} is an apocalyptic number.

It is an amenable number.

21602422060757 is a deficient number, since it is larger than the sum of its proper divisors (1).

21602422060757 is an equidigital number, since it uses as much as digits as its factorization.

21602422060757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 21602422060757 in words is "twenty-one trillion, six hundred two billion, four hundred twenty-two million, sixty thousand, seven hundred fifty-seven".