21409502514290 has 16 divisors (see below), whose sum is σ = 42040477664640. Its totient is φ = 7785273641520.

The previous prime is 21409502514271. The next prime is 21409502514307. The reversal of 21409502514290 is 9241520590412.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97315920410 + ... + 97315920629.

It is an arithmetic number, because the mean of its divisors is an integer number (2627529854040).

Almost surely, 2^{21409502514290} is an apocalyptic number.

21409502514290 is a deficient number, since it is larger than the sum of its proper divisors (20630975150350).

21409502514290 is a wasteful number, since it uses less digits than its factorization.

21409502514290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194631841057.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 21409502514290 in words is "twenty-one trillion, four hundred nine billion, five hundred two million, five hundred fourteen thousand, two hundred ninety".