21758480204 has 12 divisors (see below), whose sum is σ = 38181095904. Its totient is φ = 10849595664.

The previous prime is 21758480203. The next prime is 21758480257. The reversal of 21758480204 is 40208485712.

It is not an unprimeable number, because it can be changed into a prime (21758480203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7409459 + ... + 7412394.

It is an arithmetic number, because the mean of its divisors is an integer number (3181757992).

Almost surely, 2^21758480204 is an apocalyptic number.

It is an amenable number.

21758480204 is a deficient number, since it is larger than the sum of its proper divisors (16422615700).

21758480204 is a wasteful number, since it uses less digits than its factorization.

21758480204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14822224 (or 14822222 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 41.

The spelling of 21758480204 in words is "twenty-one billion, seven hundred fifty-eight million, four hundred eighty thousand, two hundred four".