21030329074687 has 2 divisors, whose sum is σ = 21030329074688. Its totient is φ = 21030329074686.

The previous prime is 21030329074681. The next prime is 21030329074717. The reversal of 21030329074687 is 78647092303012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21030329074687 is a prime.

It is a super-3 number, since 3×21030329074687³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21030329074681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515164537343 + 10515164537344.

It is an arithmetic number, because the mean of its divisors is an integer number (10515164537344).

Almost surely, 2^{21030329074687} is an apocalyptic number.

21030329074687 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030329074687 is an equidigital number, since it uses as much as digits as its factorization.

21030329074687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 21030329074687 in words is "twenty-one trillion, thirty billion, three hundred twenty-nine million, seventy-four thousand, six hundred eighty-seven".