21325413002513 has 8 divisors (see below), whose sum is σ = 22505509603200. Its totient is φ = 20151087046128.

The previous prime is 21325413002501. The next prime is 21325413002527. The reversal of 21325413002513 is 31520031452312.

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 21325413002513 - 2¹⁸ = 21325412740369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21325413002513.

It is not an unprimeable number, because it can be changed into a prime (21325413002533) 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, 1442653481 + ... + 1442668262.

It is an arithmetic number, because the mean of its divisors is an integer number (2813188700400).

Almost surely, 2^{21325413002513} is an apocalyptic number.

It is an amenable number.

21325413002513 is a deficient number, since it is larger than the sum of its proper divisors (1180096600687).

21325413002513 is a wasteful number, since it uses less digits than its factorization.

21325413002513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885322151.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 21325413002513 its reverse (31520031452312), we get a palindrome (52845444454825).

The spelling of 21325413002513 in words is "twenty-one trillion, three hundred twenty-five billion, four hundred thirteen million, two thousand, five hundred thirteen".