21030329074757 has 2 divisors, whose sum is σ = 21030329074758. Its totient is φ = 21030329074756.

The previous prime is 21030329074751. The next prime is 21030329074787. The reversal of 21030329074757 is 75747092303012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18432819875716 + 2597509199041 = 4293346^2 + 1611679^2 .

It is a cyclic number.

It is not a de Polignac number, because 21030329074757 - 2³⁶ = 20961609598021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21030329074751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515164537378 + 10515164537379.

It is an arithmetic number, because the mean of its divisors is an integer number (10515164537379).

Almost surely, 2^{21030329074757} is an apocalyptic number.

It is an amenable number.

21030329074757 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030329074757 is an equidigital number, since it uses as much as digits as its factorization.

21030329074757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2222640, while the sum is 50.

The spelling of 21030329074757 in words is "twenty-one trillion, thirty billion, three hundred twenty-nine million, seventy-four thousand, seven hundred fifty-seven".