21013010413 has 8 divisors (see below), whose sum is σ = 21052452960. Its totient is φ = 20973592080.

The previous prime is 21013010411. The next prime is 21013010453. The reversal of 21013010413 is 31401031012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21013010413 - 2¹ = 21013010411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013010411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3151303 + ... + 3157963.

It is an arithmetic number, because the mean of its divisors is an integer number (2631556620).

Almost surely, 2^21013010413 is an apocalyptic number.

It is an amenable number.

21013010413 is a deficient number, since it is larger than the sum of its proper divisors (39442547).

21013010413 is an equidigital number, since it uses as much as digits as its factorization.

21013010413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12107.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21013010413 its reverse (31401031012), we get a palindrome (52414041425).

The spelling of 21013010413 in words is "twenty-one billion, thirteen million, ten thousand, four hundred thirteen".