21410365420 has 48 divisors (see below), whose sum is σ = 47872671840. Its totient is φ = 8015320064.

The previous prime is 21410365409. The next prime is 21410365451. The reversal of 21410365420 is 2456301412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115039 + ... + 236758.

It is an arithmetic number, because the mean of its divisors is an integer number (997347330).

Almost surely, 2^21410365420 is an apocalyptic number.

21410365420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21410365420 is an abundant number, since it is smaller than the sum of its proper divisors (26462306420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21410365420 is a wasteful number, since it uses less digits than its factorization.

21410365420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352002 (or 352000 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 21410365420 its reverse (2456301412), we get a palindrome (23866666832).

The spelling of 21410365420 in words is "twenty-one billion, four hundred ten million, three hundred sixty-five thousand, four hundred twenty".