13721800246 has 32 divisors (see below), whose sum is σ = 25986401280. Its totient is φ = 5278478400.

The previous prime is 13721800243. The next prime is 13721800349. The reversal of 13721800246 is 64200812731.

It is a super-2 number, since 2×13721800246² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13721800243) 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, 551775 + ... + 576106.

It is an arithmetic number, because the mean of its divisors is an integer number (812075040).

Almost surely, 2^13721800246 is an apocalyptic number.

13721800246 is a deficient number, since it is larger than the sum of its proper divisors (12264601034).

13721800246 is a wasteful number, since it uses less digits than its factorization.

13721800246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127980.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 13721800246 in words is "thirteen billion, seven hundred twenty-one million, eight hundred thousand, two hundred forty-six".