21758480202 has 32 divisors (see below), whose sum is σ = 43661361600. Its totient is φ = 7228787328.

The previous prime is 21758480153. The next prime is 21758480203. The reversal of 21758480202 is 20208485712.

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 15 ways as a sum of consecutive naturals, for example, 5157598 + ... + 5161814.

It is an arithmetic number, because the mean of its divisors is an integer number (1364417550).

Almost surely, 2^21758480202 is an apocalyptic number.

21758480202 is an abundant number, since it is smaller than the sum of its proper divisors (21902881398).

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

21758480202 is a wasteful number, since it uses less digits than its factorization.

21758480202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870.

The product of its (nonzero) digits is 71680, while the sum is 39.

The spelling of 21758480202 in words is "twenty-one billion, seven hundred fifty-eight million, four hundred eighty thousand, two hundred two".