21413020261430 has 64 divisors (see below), whose sum is σ = 44338803425280. Its totient is φ = 7293518014464.

The previous prime is 21413020261393. The next prime is 21413020261433. The reversal of 21413020261430 is 3416202031412.

It is a junction number, because it is equal to n+sod(n) for n = 21413020261393 and 21413020261402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413020261433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8731691 + ... + 10911849.

It is an arithmetic number, because the mean of its divisors is an integer number (692793803520).

Almost surely, 2^{21413020261430} is an apocalyptic number.

21413020261430 is an abundant number, since it is smaller than the sum of its proper divisors (22925783163850).

21413020261430 is a wasteful number, since it uses less digits than its factorization.

21413020261430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181093.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 21413020261430 its reverse (3416202031412), we get a palindrome (24829222292842).

The spelling of 21413020261430 in words is "twenty-one trillion, four hundred thirteen billion, twenty million, two hundred sixty-one thousand, four hundred thirty".