21746343336 has 32 divisors (see below), whose sum is σ = 54371485440. Its totient is φ = 7248030848.

The previous prime is 21746343331. The next prime is 21746343383. The reversal of 21746343336 is 63334364712.

It is not an unprimeable number, because it can be changed into a prime (21746343331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221065 + ... + 303911.

It is an arithmetic number, because the mean of its divisors is an integer number (1699108920).

Almost surely, 2^21746343336 is an apocalyptic number.

It is an amenable number.

21746343336 is an abundant number, since it is smaller than the sum of its proper divisors (32625142104).

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

21746343336 is a wasteful number, since it uses less digits than its factorization.

21746343336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93793 (or 93789 counting only the distinct ones).

The product of its digits is 653184, while the sum is 42.

The spelling of 21746343336 in words is "twenty-one billion, seven hundred forty-six million, three hundred forty-three thousand, three hundred thirty-six".