21270747686196 has 48 divisors (see below), whose sum is σ = 49713821931200. Its totient is φ = 7078524774912.

The previous prime is 21270747686191. The next prime is 21270747686203. The reversal of 21270747686196 is 69168674707212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21270747686191) 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, 324073110 + ... + 324138738.

Almost surely, 2^{21270747686196} is an apocalyptic number.

It is an amenable number.

21270747686196 is an abundant number, since it is smaller than the sum of its proper divisors (28443074245004).

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

21270747686196 is a wasteful number, since it uses less digits than its factorization.

21270747686196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109888 (or 109886 counting only the distinct ones).

The product of its (nonzero) digits is 85349376, while the sum is 66.

The spelling of 21270747686196 in words is "twenty-one trillion, two hundred seventy billion, seven hundred forty-seven million, six hundred eighty-six thousand, one hundred ninety-six".