21403413210 has 64 divisors (see below), whose sum is σ = 51803942400. Its totient is φ = 5659267392.

The previous prime is 21403413197. The next prime is 21403413263. The reversal of 21403413210 is 1231430412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3779361 + ... + 3785019.

It is an arithmetic number, because the mean of its divisors is an integer number (809436600).

Almost surely, 2^21403413210 is an apocalyptic number.

21403413210 is an abundant number, since it is smaller than the sum of its proper divisors (30400529190).

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

21403413210 is a wasteful number, since it uses less digits than its factorization.

21403413210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21403413210 its reverse (1231430412), we get a palindrome (22634843622).

The spelling of 21403413210 in words is "twenty-one billion, four hundred three million, four hundred thirteen thousand, two hundred ten".