21650473676305 has 32 divisors (see below), whose sum is σ = 26886462013440. Its totient is φ = 16719324834240.

The previous prime is 21650473676267. The next prime is 21650473676333. The reversal of 21650473676305 is 50367637405612.

It is a de Polignac number, because none of the positive numbers 2^k-21650473676305 is a prime.

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, 105725044 + ... + 105929626.

It is an arithmetic number, because the mean of its divisors is an integer number (840201937920).

Almost surely, 2^{21650473676305} is an apocalyptic number.

It is an amenable number.

21650473676305 is a deficient number, since it is larger than the sum of its proper divisors (5235988337135).

21650473676305 is a wasteful number, since it uses less digits than its factorization.

21650473676305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206341.

The product of its (nonzero) digits is 19051200, while the sum is 55.

The spelling of 21650473676305 in words is "twenty-one trillion, six hundred fifty billion, four hundred seventy-three million, six hundred seventy-six thousand, three hundred five".