21419694904 has 16 divisors (see below), whose sum is σ = 40163659200. Its totient is φ = 10709385792.

The previous prime is 21419694847. The next prime is 21419694929. The reversal of 21419694904 is 40949691412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215644 + ... + 298900.

It is an arithmetic number, because the mean of its divisors is an integer number (2510228700).

Almost surely, 2^21419694904 is an apocalyptic number.

It is an amenable number.

21419694904 is a deficient number, since it is larger than the sum of its proper divisors (18743964296).

21419694904 is a wasteful number, since it uses less digits than its factorization.

21419694904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115422 (or 115418 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 21419694904 in words is "twenty-one billion, four hundred nineteen million, six hundred ninety-four thousand, nine hundred four".