21459058428707 has 2 divisors, whose sum is σ = 21459058428708. Its totient is φ = 21459058428706.

The previous prime is 21459058428593. The next prime is 21459058428721. The reversal of 21459058428707 is 70782485095412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21459058428707 - 2³⁰ = 21457984686883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21459058428707.

It is not a weakly prime, because it can be changed into another prime (21459058428757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10729529214353 + 10729529214354.

It is an arithmetic number, because the mean of its divisors is an integer number (10729529214354).

Almost surely, 2^{21459058428707} is an apocalyptic number.

21459058428707 is a deficient number, since it is larger than the sum of its proper divisors (1).

21459058428707 is an equidigital number, since it uses as much as digits as its factorization.

21459058428707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 21459058428707 in words is "twenty-one trillion, four hundred fifty-nine billion, fifty-eight million, four hundred twenty-eight thousand, seven hundred seven".