13721370036 has 24 divisors (see below), whose sum is σ = 34927124064. Its totient is φ = 4157990880.

The previous prime is 13721370023. The next prime is 13721370037. The reversal of 13721370036 is 63007312731.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 13721369979 and 13721370006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13721370037) 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, 51974755 + ... + 51975018.

It is an arithmetic number, because the mean of its divisors is an integer number (1455296836).

Almost surely, 2^13721370036 is an apocalyptic number.

It is an amenable number.

13721370036 is an abundant number, since it is smaller than the sum of its proper divisors (21205754028).

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

13721370036 is a wasteful number, since it uses less digits than its factorization.

13721370036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103949791 (or 103949789 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 33.

Adding to 13721370036 its reverse (63007312731), we get a palindrome (76728682767).

The spelling of 13721370036 in words is "thirteen billion, seven hundred twenty-one million, three hundred seventy thousand, thirty-six".