21713047110 has 80 divisors (see below), whose sum is σ = 59255521776. Its totient is φ = 5703711552.

The previous prime is 21713047093. The next prime is 21713047123. The reversal of 21713047110 is 1174031712.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 145777 + ... + 254316.

Almost surely, 2^21713047110 is an apocalyptic number.

21713047110 is an abundant number, since it is smaller than the sum of its proper divisors (37542474666).

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

21713047110 is a wasteful number, since it uses less digits than its factorization.

21713047110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400179 (or 400170 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

Adding to 21713047110 its reverse (1174031712), we get a palindrome (22887078822).

The spelling of 21713047110 in words is "twenty-one billion, seven hundred thirteen million, forty-seven thousand, one hundred ten".