21513413504302 has 16 divisors (see below), whose sum is σ = 32589944805600. Its totient is φ = 10650100650400.

The previous prime is 21513413504299. The next prime is 21513413504347. The reversal of 21513413504302 is 20340531431512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22783224 + ... + 23708692.

It is an arithmetic number, because the mean of its divisors is an integer number (2036871550350).

Almost surely, 2^{21513413504302} is an apocalyptic number.

21513413504302 is a deficient number, since it is larger than the sum of its proper divisors (11076531301298).

21513413504302 is a wasteful number, since it uses less digits than its factorization.

21513413504302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040651.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 21513413504302 its reverse (20340531431512), we get a palindrome (41853944935814).

The spelling of 21513413504302 in words is "twenty-one trillion, five hundred thirteen billion, four hundred thirteen million, five hundred four thousand, three hundred two".