21143100133413 has 10 divisors (see below), whose sum is σ = 31584137236454. Its totient is φ = 14095400088888.

The previous prime is 21143100133289. The next prime is 21143100133453. The reversal of 21143100133413 is 31433100134112.

21143100133413 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 310 + 0 + 1 + 3 + 341 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11310999891489 + 9832100241924 = 3363183^2 + 3135618^2 .

It is not a de Polignac number, because 21143100133413 - 2⁹ = 21143100132901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21143100133453) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 130512963706 + ... + 130512963867.

Almost surely, 2^{21143100133413} is an apocalyptic number.

It is an amenable number.

21143100133413 is a deficient number, since it is larger than the sum of its proper divisors (10441037103041).

21143100133413 is an equidigital number, since it uses as much as digits as its factorization.

21143100133413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261025927585 (or 261025927576 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 21143100133413 its reverse (31433100134112), we get a palindrome (52576200267525).

The spelling of 21143100133413 in words is "twenty-one trillion, one hundred forty-three billion, one hundred million, one hundred thirty-three thousand, four hundred thirteen".