21735302601679 has 2 divisors, whose sum is σ = 21735302601680. Its totient is φ = 21735302601678.

The previous prime is 21735302601563. The next prime is 21735302601743. The reversal of 21735302601679 is 97610620353712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21735302601679 - 2²¹ = 21735300504527 is a prime.

It is a super-2 number, since 2×21735302601679² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21735302602679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10867651300839 + 10867651300840.

It is an arithmetic number, because the mean of its divisors is an integer number (10867651300840).

Almost surely, 2^{21735302601679} is an apocalyptic number.

21735302601679 is a deficient number, since it is larger than the sum of its proper divisors (1).

21735302601679 is an equidigital number, since it uses as much as digits as its factorization.

21735302601679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 21735302601679 in words is "twenty-one trillion, seven hundred thirty-five billion, three hundred two million, six hundred one thousand, six hundred seventy-nine".