21053410512413 has 2 divisors, whose sum is σ = 21053410512414. Its totient is φ = 21053410512412.

The previous prime is 21053410512403. The next prime is 21053410512437. The reversal of 21053410512413 is 31421501435012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15653749816324 + 5399660696089 = 3956482^2 + 2323717^2 .

It is a cyclic number.

It is not a de Polignac number, because 21053410512413 - 2¹⁸ = 21053410250269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21053410512413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21053410512403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10526705256206 + 10526705256207.

It is an arithmetic number, because the mean of its divisors is an integer number (10526705256207).

Almost surely, 2^{21053410512413} is an apocalyptic number.

It is an amenable number.

21053410512413 is a deficient number, since it is larger than the sum of its proper divisors (1).

21053410512413 is an equidigital number, since it uses as much as digits as its factorization.

21053410512413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 21053410512413 its reverse (31421501435012), we get a palindrome (52474911947425).

The spelling of 21053410512413 in words is "twenty-one trillion, fifty-three billion, four hundred ten million, five hundred twelve thousand, four hundred thirteen".